A Heretical Ability!! (異端なる能力!!, Itannaru Nōryoku!!) is chapter 67 of the Naruto manga.
Sasuke and Yoroi prepare to fight and the rest of the participants go upstairs to observe. Kakashi takes this opportunity to warn Sasuke not to use his cursed seal, stating that if he activates it the match will end and Sasuke will be detained. Since he cannot use his Sharingan without inadvertently activating the cursed seal, Sasuke and the watching Orochimaru wonder how he will handle this handicap. When the match starts Sasuke resorts to taijutsu, which gives Yoroi ample opportunity to grab Sasuke and absorb his chakra. Knowing that a prolonged battle will leave him exhausted and thus unable to win, Sasuke uses his Lion Combo, a technique based off Rock Lee's Front Lotus, on Yoroi.