Vademon (BT22-061) [Cyber Eden]

[Digivolve [Vegiemon]: Cost 3/Lv.4 w/[DM] trait: Cost 4]
When any of your [Ver.2] trait Digimon would digivolve into this card, for each of its face-down digivolution cards, reduce the digivolution cost by 1.
[Fragment "3"]
[When Digivolving] [When Attacking] [Once Per Turn] [De-Digivolve 1] 1 of your opponent's Digimon. Then, by trashing this Digimon's bottom face-down digivolution card, return 1 of your opponent's play cost 4 or lower Digimon or Tamers to the hand.

[Opponent's Turn] [Once Per Turn] When one of your opponent's Digimon attacks, you may change the attack target to this Digimon.