The Apostle of Doom Descends! BT20-097

Effect: [Main] 1 of your Digimon may digivolve into a level 6 or lower Digimon card with [Dex] or [DeathX] in its name in the trash with the digivolution cost reduced by 4. Then, place this card in the battle area.[All Turns] When any of your [DexDorugoramon] would leave the battle area, ＜Delay＞.・By returning 1 [Dorumon] from those Digimon's digivolution cards to the hand, you may play 1 [DeathXmon] from your trash without paying the cost.
Security Effect: [Security] You may play 1 [Dorumon] from your hand or trash without paying the cost. Then, add this card to the hand.