Genex Ally Seraphim Wing

Machine-Type Xyz

Rank 4

Dark Atribute

2 level 4 monsters Once per turn during either player's turn you can change the attribute of one card on the field. During either player's turn, by detaching 1 Xyz material from this card, Declare one attribute, and destroy all face-down monsters and all face-up monsters that don't have the declared attribute.