Whereabouts of the Holy Grail, Romani Archaman

【AUTO】 [(2) Put 1 《Chaldea》 or 《Camelot》 character from your hand into your waiting room] When you use this card's "Backup", you may pay the cost. If you do, choose 1 of your opponent's characters with level higher than your opponent's level, and put it at the bottom of their deck.【ACT】 【COUNTER】 Backup 2500, Level 2 [(1) Put this card from your hand into your waiting room] (Choose 1 of your characters that is being frontal attacked, and that character gets +2500 power until end of turn)