Omnimon Alter-S

Effect: [When Digivolving] Trigger ＜De-Digivolve 1＞ on all of your opponent's Digimon. (Trash a card from the top of one of your opponent's Digimon. If it has no digivolution cards, or becomes a level 3 Digimon, you can't trash any more cards.) Then, delete all of your opponent's Digimon with 5000 DP or less.[When Attacking] You may make this Digimon unblockable for the turn by returning one of its level 6 digivolution cards to your hand.