Evigishki Merrowgeist [DT06-EN089] Ultra Rare Advent Calendar 2018 you can detach 1 Xyz

you can detach 1 Xyz Material from that monster instead

When this card is Summoned: You can send 1 Level 2 or lower Aqua-Type WATER monster from your Deck or face-up from your field to the Graveyard

then target 1 Effect Monster on the field

or card effect that could have targeted this card: You can activate this effect

Evigishki Merrowgeist [DT06-EN089] Ultra Rare Advent Calendar 2018 you can detach 1 XyzSet: Duel Terminal 6 Card type: Xyz Effect Monster Rarity: Ultra Rare Attack: 2100 Defense: 1600 2 Level 4 monsters After damage calculation, if this card destroys an opponent's monster by battle: You can detach 1 Xyz Material from this card; shuffle the destroyed monster into the Deck instead of sending it to the Graveyard.