Gouki Twistcobra (COTD-EN009) - Code of the Duelist Unlimited

(Quick Effect): You can Tribute 1 "Gouki" monster, then target 1 "Gouki" monster you control; it gains ATK equal to the original ATK of the Tributed monster until the end of this turn. If this card is sent from the field to the GY: You can add 1 "Gouki" card from your Deck to your hand, except "Gouki Twistcobra". You can only use each effect of "Gouki Twistcobra" once per turn.