Alphamon

[When Digivolving] Place 1 card with the [X Antibody] trait from your trash under this Digimon as its bottom digivolution card. [Your Turn] [Once Per Turn] When an effect places a digivolution card under this Digimon, ＜De-Digivolve 1＞ 1 of your opponent's Digimon. (Trash the top card. You can't trash past level 3 cards.)