Zanmetsumon

[On Play] [When Digivolving] ＜De-Digivolve 1＞ 1 of your opponent's Digimon. (Trash the top card. You can't trash past level 3 cards.) with as much or less DP as this Digimon. Then, delete 1 Digimon with a play cost of 3 or less. [All Turns] This Digimon gains all of the effects on cards with [Gammamon] in its name in this Digimon's digivolution cards.

Alternate effect

[Digivolve] Lv.4 w/[Gammamon] in text: Cost 3