SkullBaluchimon (BT10-080) - Xros Encounter

When one of your effects trashes this card in your hand, if it's your turn, 1 of your Digimon may digivolve into 1 purple DIgimon card with [Undead] or [Dark Animal] in its traits from your trash for its digivolution cost.
[When Digivolving] If digivolving from the trash, this Digimon gains "[On Deletion] Delete 1 of your opponent's Digimon." until the end of your opponent's turn.