The Apostle of Doom Descends! [BT20-097] [Release Special Booster 2.0]

[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 [DexDorugamon] 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.