Unexpected Healing, Asuna [Sword Art Online Animation 10th Anniversary]

[AUTO] When your other "Conquering Floor 1's Boss, Kirito" attacks, if there are no markers underneath that character, you may put this card face up underneath that character as a marker. If you do, that character gets +1000 power until end of turn. [ACT] [Put the top card of your stock into your clock & [REST] this card] Choose 1 level 1 or lower character in your waiting room, and return it to your hand.