[Main] 1 of your opponent's Digimon. (Trash 1 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, you may place 1 card with [X-Antibody] in its traits from your hand as the bottom digivolution card of 1 of your black Digimon with [X-Antibody] in its traits to delete 1 of your opponent's Digimon with a play cost of 4 or less.