¶1 As applied to Washington, the holding in Padilla v. Kentucky, 559 U.S. 356, 130 S. Ct. 1473, 176 L. Ed. 2d 284 (2010) is an affirmation of an old rule of state constitutional law — the duty to provide effective assistance of counsel includes the duty to reasonably research and apply relevant statutes. However, language in certain Washington appellate cases made it appear that this well-established rule did not apply to RCW 10.40.200. In superseding those cases, Padilla significantly changed state law.
¶2 Muhammadou Jagana raises a claim that would have been rejected before Padilla based on those superseded appellate cases. We therefore reverse the Court of Appeals’ order dismissing Jagana’s personal restraint petition (PRP) and remand to the trial court for an evidentiary hearing. However, Yung-Cheng Tsai’s claim was available before Padilla, and Tsai did in fact raise his claim with the assistance of an attorney in 2008. That motion was denied based on an issue of law not affected by Padilla, and Tsai did not appeal. We therefore affirm the Court of Appeals’ order dismissing Tsai’s PRP
FACTUAL AND PROCEDURAL HISTORY
A. Yung-Cheng Tsai
¶3 On July 27, 2006, Tsai pleaded guilty to one count of unlawful possession of a controlled substance with intent to deliver (marijuana). On August 29, 2006, the trial court sentenced him to 11 months in jail and 12 months of community custody. Tsai did not appeal. On or about October *9730, 2007, Tsai received a notice to appear from the United States Immigration and Naturalization Services that informed him that he was subject to removal (also known as deportation) based on his conviction.
¶4 On July 21, 2008, Tsai filed a motion to withdraw his guilty plea under CrR 7.8, alleging that his attorney wrongfully advised him he would not be deportable if he accepted the State’s plea offer and that this erroneous advice was prejudicial. The trial court denied Tsai’s motion as time barred. The motion was filed over one year after Tsai pleaded guilty, and the trial court held that equitable tolling did not apply. The trial court did not transfer Tsai’s motion to the Court of Appeals for consideration as a PRR Tsai did not appeal or otherwise pursue his 2008 motion.
¶5 On May 18, 2011, Tsai again moved to withdraw his guilty plea under CrR 7.8 based on his attorney’s alleged erroneous advice. Tsai argued his motion was exempt from the one-year time bar in RCW 10.73.090(1) under RCW 10.73.100(6) because Padilla and State v. Sandoval, 171 Wn.2d 163, 249 P.3d 1015 (2011) (applying Padilla) effected a significant, material change in the law that applies retroactively.
¶6 The trial court initially denied Tsai’s 2011 motion, holding it was time barred. On Tsai’s motion, the trial court vacated its holding and transferred the motion to the Court of Appeals to be considered as a PRP. The Court of Appeals denied Tsai’s PRP as time barred, holding that Padilla and Sandoval do not apply retroactively. We granted Tsai’s motion for discretionary review and consolidated his case with Jagana’s. In re Pers. Restraint of Yung-Cheng Tsai, 180 Wn.2d 1014, 327 P.3d 55 (2014).
B. Muhammadou Jagana
¶7 On June 7, 2006, Jagana pleaded guilty to one count of possession of a controlled substance (cocaine). He was sentenced to three months of electronic home monitoring. Jagana did not appeal.
*98¶8 On November 4, 2010, Jagana moved to withdraw his guilty plea under CrR 7.8. Relying on Padilla, Jagana asserted that his attorney failed to investigate Jagana’s immigration status, did not advise him that his guilty plea could have immigration consequences, and did not advise him to speak with an immigration attorney. The trial court transferred Jagana’s motion to the Court of Appeals to be considered as a PRR
¶9 The Court of Appeals initially filed a published opinion holding Jagana’s PRP was timely under RCW 10.73-.100(6) and remanding the case to the trial court for a reference hearing. In re Pers. Restraint of Jagana, 170 Wn. App. 32, 282 P.3d 1153 (2012). The Court of Appeals reasoned that Padilla was a significant, material change in the law and that Padilla should apply retroactively because it was not a new rule; it merely applied the standard analysis for ineffective assistance of counsel to a new set of facts.
¶10 The State sought discretionary review, and we remanded to the Court of Appeals for reconsideration in light of Chaidez v. United States, 568 U.S. _, 133 S. Ct. 1103, 1107, 185 L. Ed. 2d 149 (2013), which held Padilla did announce a new rule that does not apply retroactively to matters on collateral review. In re Pers. Restraint of Jagana, 177 Wn.2d 1027, 309 P.3d 1186 (2013). On reconsideration, the Court of Appeals withdrew its opinion and dismissed Jagana’s PRP as time barred. We granted Jagana’s motion for discretionary review and consolidated his case with Tsai’s. In re Pers. Restraint of Jagana, 180 Wn.2d 1014, 327 P.3d 55 (2014).
ISSUES
¶11 A. Are the PRPs exempt from the one-year time bar in RCW 10.73.090(1) under RCW 10.73.100(6)?
¶12 B. If the PRPs are not time barred, are the petitioners entitled to relief or evidentiary hearings on the merits of their claims?
*99ANALYSIS
A. As applied to Washington, Padilla did not announce a new rule, but it did effect a significant change in the law under RCW 10.73.100(6)
1. The unreasonable failure to give any advice about the immigration consequences of a guilty plea was already deficient performance in Washington under the ordinary Strickland test
¶13 A criminal defendant’s right to the assistance of counsel derives from the Sixth Amendment to the United States Constitution and article I, section 22 of the Washington Constitution. Under these provisions, a criminal defense attorney has the constitutional duty to provide assistance that is effective. Strickland v. Washington, 466 U.S. 668, 686, 104 S. Ct. 2052, 80 L. Ed. 2d 674 (1984). Where a defense attorney makes “errors so serious that counsel was not functioning as the ‘counsel’ guaranteed the defendant by the Sixth Amendment,” the attorney’s performance is constitutionally deficient. Id. at 687. Where that deficiency deprives the defendant of fair proceedings, the defendant has suffered prejudice because there is “a breakdown in the adversary process that renders the result unreliable.” Id. Unreliable results caused by defense counsel’s prejudicially deficient performance are constitutionally intolerable.
¶14 When determining whether a defense attorney provided effective assistance, the underlying test is always one of “reasonableness under prevailing professional norms.” Id. at 688. While simple to state in theory, this test can be complicated to apply in practice. The court must engage in a fact-specific inquiry into the reasonableness of an attorney’s actions, measured against the applicable prevailing professional norms in place at the time. Id. at 690. It is thus impossible to “exhaustively define the obliga*100tions of counsel [ ]or form a checklist for judicial evaluation of attorney performance.” Id. at 688. Nevertheless, effective representation “entails certain basic duties,” such as
a duty of loyalty, a duty to avoid conflicts of interest [,] . . . the overarching duty to advocate the defendant’s cause and the more particular duties to consult with the defendant on important decisions and to keep the defendant informed of important developments in the course of the prosecution. Counsel also has a duty to bring to bear such skill and knowledge as will render the trial a reliable adversarial testing process.
Id.
¶15 It is against this backdrop that we consider whether Padilla applies retroactively under RCW 10.73-.100(6) and Teague v. Lane, 489 U.S. 288, 109 S. Ct. 1060, 103 L. Ed. 2d 334 (1989). Under Teague, new constitutional rules of criminal procedure usually apply only to matters on direct review, but old rules apply to matters on both direct and collateral review. Whorton v. Bockting, 549 U.S. 406, 416, 127 S. Ct. 1173, 167 L. Ed. 2d 1 (2007). Because it is impossible to exhaustively define a defense attorney’s obligations under Strickland, cases that merely apply the ordinary test for ineffective assistance of counsel to new facts do not announce new rules for Teague purposes. Chaidez, 133 S. Ct. at 1107 (citing Strickland, 466 U.S. 668). As applied to Washington law, Padilla is just such a case.
¶16 In Chaidez, the Supreme Court held that Padilla did not merely apply the ordinary test for ineffective assistance of counsel; it first considered the threshold question of whether defense counsel has any constitutional duty to advise noncitizen defendants about the immigration consequences of pleading guilty. Id. at 1108. The notion that defense counsel has no such duty arose from a distinction many courts have drawn between direct and collateral consequences. Padilla, 559 U.S. at 365 & n.9. Immigration consequences were usually considered collateral and thus outside the scope of defense counsel’s constitutional duty to *101advise. Id. at 364-65. Padilla did not fully reject the direct-versus-collateral distinction but held it was not appropriate as applied to immigration consequences. Id. at 366.
¶17 This court first explicitly adopted the distinction between direct and collateral consequences in a 1980 case holding that habitual,criminal proceedings were collateral consequences. State v. Barton, 93 Wn.2d 301, 305, 609 P.2d 1353 (1980). Within three years of Barton, our legislature did what Padilla ultimately did in 2010 — it rejected the direct-versus-collateral distinction as applied to immigration consequences, declaring that a noncitizen defendant must be warned about immigration consequences before pleading guilty.1 Laws of 1983, ch. 199, § 1(1), codified at RCW 10.40.200(1). To give effect to this statute, the standard plea form in CrR 4.2 was promptly amended to include a statement warning noncitizen defendants of possible immigration consequences. That warning statement is not, itself, the required advice; it merely creates a rebuttable presumption the defendant has been properly advised. RCW 10.40.200(2); Sandoval, 171 Wn.2d at 173.
¶18 RCW 10.40.200’s plain language gives noncitizen defendants the unequivocal right to advice regarding immigration consequences and necessarily imposes a correlative duty on defense counsel to ensure that advice is provided. State v. Butler, 17 Wn. App. 666, 675, 564 P.2d 828 (1977) (“Beyond the defendant’s power of knowledge and intelligence, the duty to protect the defendant lies first and foremost with his attorney.”). While defense counsel’s duty *102to advise regarding immigration consequences is imposed by statute, “treasonable conduct for an attorney includes carrying out the duty to research the relevant law.” State v. Kyllo, 166 Wn.2d 856, 862, 215 P.3d 177 (2009) (citing Strickland, 466 U.S. at 690-91). In many cases,2 defense counsel’s failure to fulfill his or her statutory duty may be due to an unreasonable failure to research or apply RCW 10.40.200, and there is no conceivable tactical or strategic purpose for such a failure.
¶19 Where an attorney unreasonably fails to research or apply relevant statutes without any tactical purpose, that attorney’s performance is constitutionally deficient. See, e.g., id. at 865-69 (deficient performance where reasonably adequate research would have shown that a former pattern jury instruction misstated the law on self-defense); State v. Aho, 137 Wn.2d 736, 745-46, 975 P.2d 512 (1999) (deficient performance where reasonably adequate research would have prevented the possibility of conviction based on acts predating the relevant statute’s effective date); cf. State v. Paredez, 2004-NMSC-036, 136 N.M. 533, 101 P.3d 799, 805 (holding that the failure to advise a noncitizen defendant about immigration consequences as required by N.M. Code R. § 5-303(F)(5) could be ineffective assistance); RPC 1.1 cmt. 2 (“Perhaps the most fundamental legal skill consists of determining what kind of legal problems a situation may involve, a skill that necessarily transcends any particular specialized knowledge.”). Indeed, “[a]n attorney’s ignorance of a point of law that is fundamental to his case combined with his failure to perform basic research on that point is a quintessential example of unreasonable performance under Strickland.” Hinton v. Alabama, 571 U.S. _, 134 S. Ct. 1081, 1089, 188 L. Ed. 2d 1 (2014). The unreasonable failure to research and apply RCW 10.40.200 is as constitutionally *103deficient as the unreasonable failure to research and apply any relevant statute.
¶20 This resolves Padilla’s threshold question as applied to Washington law. Padilla thus becomes a “garden-variety application! ] of the test in Strickland” that simply refines the scope of defense counsel’s constitutional duties as applied to a specific fact pattern. Chaidez, 133 S. Ct. at 1107. Because Padilla did not announce a new rule under Washington law, it applies retroactively to matters on collateral review under Teague.
2. Padilla effected a significant change in Washington law
¶21 Whether a changed legal standard applies retroactively is a distinct inquiry from whether there has been a significant change in the law. An old rule whose new application significantly changes the law is unusual, but not impossible, as this case demonstrates. Padilla’s application of the old Strickland test significantly changed state law by superseding Washington appellate cases that apparently foreclosed the possibility that defense counsel’s unreasonable and prejudicial failure to fulfill his or her duties under RCW 10.40.200 could ever be constitutionally ineffective.
(a) A “new” rule under Teague is not always the same as a “significant change” in the law under RCW 10.73.100(6)
¶22 There is unquestionably a substantial overlap between “new” Teague rules and “significant changes” in state law, but they are two separate inquiries: “RCW 10.73-.100(6) sets forth three conditions that must be met before a petitioner can overcome the one-year time bar: (1) a [significant] change in the law (2) that is material and (3) that applies retroactively.” In re Pers. Restraint of Gentry, 179 Wn.2d 614, 625, 316 P.3d 1020 (2014). While we have used the Teague analysis and its definition of a “new” rule *104to determine whether a constitutional rule applies retroactively, id. at 626, we have never imported Teague’s definition of a “new” rule into our analysis of whether there has been a significant change in the law.
¶23 In fact, we have always defined the two phrases differently. A significant change in state law occurs “where an intervening opinion has effectively overturned a prior appellate decision that was originally determinative of a material issue.” In re Pers. Restraint of Greening, 141 Wn.2d 687, 697, 9 P.3d 206 (2000). By comparison, “new” rules for Teague purposes “are those that ‘break[ ] new ground or impose [ ] a new obligation on the States or the Federal government [or] if the result was not dictated by precedent existing at the time the defendant’s conviction became final.’ ” State v. Evans, 154 Wn.2d 438, 444, 114 P.3d 627 (2005) (alterations in original) (quoting Teague, 489 U.S. at 301). “If before the opinion is announced, reasonable jurists could disagree on the rule of law, the rule is new.” Id. (citing Beard v. Banks, 542 U.S. 406, 411, 124 S. Ct. 2504, 159 L. Ed. 2d 494 (2004)).
¶24 Using different definitions for a “significant change” in state law and a “new” rule under Teague is not only fully supported by the plain language of RCW 10.73-.100(6) and our own precedent, it also makes good sense in light of the different purposes these phrases serve in our analysis. The “significant change” language is intended to reduce procedural barriers to collateral relief in the interests of fairness and justice. Greening, 141 Wn.2d at 697 (“While litigants have a duty to raise available arguments in a timely fashion and may later be procedurally penalized for failing to do so ... they should not be faulted for having omitted arguments that were essentially unavailable at the time.”). Meanwhile, Teague’s broad definition of “new” rules that usually do not apply retroactively is intended to strengthen procedural barriers to collateral relief in the interests of finality and comity. Danforth v. Minnesota, 552 U.S. 264, 279-81, 128 S. Ct. 1029, 169 L. Ed. 2d 859 (2008).
*105¶25 A “significant change” in state law and a “new” constitutional rule of criminal procedure are different phrases with different meanings that serve different purposes. We will not conflate them. Gentry, 179 Wn.2d at 625; cf. Commonwealth v. Sylvain, 466 Mass. 422, 433-34, 995 N.E.2d 760 (2013) (retaining the general Teague framework but declining to adopt the expanded definition of a “new” rule that was articulated after Teague).
(b) Padilla significantly changed Washington law
¶26 It is true that in most cases, simply applying the ordinary Strickland test to new facts will announce neither new rules nor significant changes in the law. See In re Pers. Restraint of Turay, 150 Wn.2d 71, 83, 74 P.3d 1194 (2003) (Where an opinion “simply applies settled law to new facts, it does not constitute a significant change in the law.”). However, Washington appellate cases issued before Padilla apparently foreclosed any possibility that the unreasonable, prejudicial failure to provide the advice required by RCW 10.40.200 could ever be ineffective assistance of counsel. Padilla superseded these decisions, significantly changing state law.
¶27 The first appellate case to explicitly consider whether RCW 10.40.200 has any implications on the constitutional effectiveness of defense counsel is State v. Holley, 75 Wn. App. 191, 876 P.2d 973 (1994). In that case, the Court of Appeals held that a reference hearing was required to determine whether the defendant’s guilty plea was entered in violation of RCW 10.40.200. Id. at 200-01. Even though it decided the case on statutory grounds, Holley chose to address the constitutional implications of RCW 10.40.200 and summarily stated in dictum that there were none. Id. at 196-98. To support this proposition, Holley relied on State v. Malik, 37 Wn. App. 414, 680 P.2d 770 (1984). Malik was based on facts occurring before RCW 10.40.200’s effective date and so did not consider the impact of that statute on the duties of defense counsel. State v. Littlefair, 112 Wn. App. 749, 767, 51 *106P.3d 116 (2002). As discussed above, with the enactment of RCW 10.40.200, the unreasonable failure to research and apply that statute became constitutionally deficient performance. Holley’s dictum was thus erroneous.
¶28 The only decision of this court that touches on the issue presented here is In re Personal Restraint of Yim, 139 Wn.2d 581, 588, 989 P.2d 512 (1999). However, Yim dealt with a claim that the defendant received incorrect advice, rather than no advice, regarding immigration consequences. Id. Padilla is not limited to incorrect advice; it explicitly holds that providing no advice regarding immigration consequences is also deficient. Padilla, 559 U.S. at 370. Further, Yim discussed only the voluntariness of the defendant’s plea without reference to the standard for determining ineffective assistance of counsel, and Yim did not consider RCW 10.40-.200. Yim, 139 Wn.2d at 588-90 (citing State v. Ward, 123 Wn.2d 488, 512-13, 869 P.2d 1062 (1994); Malik, 37 Wn. App. at 416). Yim’s analysis does not address the issues presented where a noncitizen asserts his or her attorney unreasonably failed to provide any advice about the immigration consequences of pleading guilty as required by RCW 10.40.200.
¶29 Nevertheless, Washington appellate courts have routinely rejected the possibility that such a failure could ever be ineffective assistance of counsel. Each of those decisions relies on cases analyzing guilty pleas entered before the effective date of RCW 10.40.200, Holley’s erroneous dictum, or Yim’s distinguishable analysis. See State v. Jamison, 105 Wn. App. 572, 591-92, 595, 20 P.3d 1010 (2001) (citing Yim, 139 Wn.2d at 588; Holley, 75 Wn. App. at 198); State v. Martinez-Lazo, 100 Wn. App. 869, 876-77, 999 P.2d 1275 (2000) (citing Yim, 139 Wn.2d at 588; Holley, 75 Wn. App. at 197; In re Pers. Restraint of Peters, 50 Wn. App. 702, 704, 750 P.2d 643 (1988)), abrogation recognized by Chaidez, 133 S. Ct. at 1109 n.8; Holley, 75 Wn. App. at 197-98 (citing Malik, 37 Wn. App. at 416-17); Peters, 50 Wn. *107App. at 705 (noting the guilty plea was entered before RCW 10.40.200’s effective date); see generally Littlefair, 112 Wn. App. at 766-69 (discussing the history of RCW 10.40.200, Malik, and its progeny). Padilla superseded the theory underlying these decisions — that “anything short of an affirmative misrepresentation by counsel of the plea’s deportation consequences could not support the plea’s withdrawal.” Sandoval, 171 Wn.2d at 170 n.l. This was a significant change in Washington law.
B. Jagana is entitled to an evidentiary hearing on the merits
¶30 A significant, material, retroactive change in the law exempts a PRP from RCW 10.73.090(l)’s one-year time bar for collateral attacks. RCW 10.73.100(6). However, in light of the arguments currently presented for our review, only Jagana is entitled to an evidentiary hearing on the merits of his PRP.
¶31 Jagana alleges that his trial attorney unreasonably failed to ascertain Jagana’s immigration status and did not provide him with any guidance as to any possible immigration consequences of his guilty plea, and further alleges that these failures rendered Jagana’s plea involuntary. These allegations, if true, would establish that Jagana did not receive effective assistance of counsel in deciding whether to plead guilty. As discussed above, Washington courts would have rejected Jagana’s claim before Padilla was issued. Jagana’s failure to raise this apparently unavailable argument cannot render his PRP procedurally barred. Greening, 141 Wn.2d at 697. He is entitled to an evidentiary hearing.
¶32 However, Washington courts have long recognized that where a defendant relies on his or her attorney’s incorrect advice about the immigration consequences of pleading guilty, the defendant’s plea may be rendered involuntary and withdrawn. Yim, 139 Wn.2d at 588. With the assistance of an attorney, Tsai filed a motion to with*108draw his guilty plea in 2008, alleging his guilty plea was involuntary because his attorney incorrectly advised him about the immigration consequences. The trial court denied this motion, not because it was legally unavailable on the merits but because the trial court decided it was untimely and not subject to equitable tolling. Perhaps the trial court erred in 2008, but Tsai did not appeal that decision and neither Padilla nor Sandoval addresses equitable tolling. Based on the arguments currently presented for our review, Tsai has not shown he is entitled to an evidentiary hearing on the merits of his PRP. See RAP 16.4(d); Greening, 141 Wn.2d at 697.
CONCLUSION
¶33 This case is not a faceless one that bears no consequences. Numerous noncitizen defendants have benefited from the clear statutory requirement that defense counsel has a duty to advise them about the immigration consequences of pleading guilty. However, numerous meritorious claims that defense counsel unreasonably failed to fulfill this duty have been rejected based on the mistaken belief that RCW 10.40.200 has no constitutional implications. Now that this mistaken belief has finally been corrected, holding such meritorious claims are procedurally barred would deprive many others of the opportunity to have the merits of their constitutional claims reviewed. In light of the legislature’s long-standing commitment to ensuring noncitizen defendants understand the immigration consequences of conviction and this court’s long-standing commitment to ensuring criminal defendants receive effective assistance of counsel, such an outcome would be unjust and fall short of the values underpinning our state statutory framework.
Stephens, Wiggins, González, and Gordon McCloud, JJ., concur.Contrary to the dissent’s suggestion, we are not holding that the legislature has the authority to define the scope of constitutionally effective counsel. Rather, we are giving effect to our own precedent, which holds that a defense attorney has a basic duty to know and apply relevant statutes and professional norms, and the unreasonable failure to fulfill that duty is constitutionally deficient. E.g., State v. Kyllo, 166 Wn.2d 856, 862, 215 P.3d 177 (2009); see also Kimmelman v. Morrison, 477 U.S. 365, 385, 106 S. Ct. 2574, 91 L. Ed. 2d 305 (1986) (deficient performance where counsel failed to file a timely suppression motion because he did not engage in any pretrial discovery and therefore was not aware of the evidence to be presented).
There may be situations where defense counsel’s failure to provide the advice required by RCW 10.40.200 is objectively reasonable and thus not deficient. See People v. Pozo, 746 P.2d 523, 529 (Colo. 1987). And of course, even if deficient, counsel’s performance is not constitutionally ineffective unless it is also prejudicial. Kyllo, 166 Wn.2d at 862.