MetalEtemon (BT11-044) - Dimensional Phase Foil

[On Play][When Digivolving] Reveal the top 4 cards of your deck. You may play any number of Digimon cards with [Chuumon], [Sukamon], or [Etemon] in their names whose total play costs add up to 7 or less among them without paying the costs. Trash the rest.