Lilithmon (X Antibody)

[All Turns] [Once Per Turn] When this Digimon would leave the battle area other than in battle, if [Lilithmon] or [X Antibody] in its digivolution cards, by deleting 1 other Digimon, prevent it from leaving.
[All Turns] [Once Per Turn] When another Digimon is deleted, if it's your turn, you may play 1 purple level 4 or lower Digimon card from your trash without paying the cost. If it's your opponent's turn, trash the top card of their security stack.

[Alt]
[Digivolve] [Lilithmon]: Cost 1