Alsei, le Grand Protecteur Sylvan LVAL-FR052

2 Level 8 monsters Once per turn, you can declare 1 card name, reveal the top card of your Deck and if it is the declared card name, add it to your hand. Otherwise, send it to the Graveyard. If a card is sent from your Deck to the Graveyard by a card effect (except during the Damage Step), you can detach 1 Xyz Material from this card, then target 1 card on the field, return the target to the top or bottom of the Deck. You can only use this effect of "Alsei, the Sylvan High Protector" once per turn.