Chikurimon [BT6-056] (Event Pack 4) [Double Diamond Promos]

[Security] At the end of the battle, trigger [De-Digivolve 1] on 1 of your opponent's Digimon. (Trash 1 card from the top of one of your opponent's Digimon. If it has no digivolution cards, or becomes a level 3 Digimon, you can't trash any more cards.)