If you control no monsters, or all monsters you control are Trickstar monsters: You can Special Summon this card from your hand. During the Damage Step, when your Trickstar monster battles an opponent s monster (Quick Effect): You can send this card from your hand to the GY; that monster you control gains ATK equal to its original ATK until the end of this turn. You can only use 1 Trickstar Corobane effect per turn, and only once that turn.