[Main] Reveal the top 3 cards of your deck. Choose 1 Digimon card with [X Antibody] in its traits among them, and delete 1 of your opponent’s Digimon whose play cost is less than or equal to the chosen card's play cost. Trash the revealed cards. Then, place 1 card with [X Antibody] in its traits from your trash under 1 of your Digimon with [X Antibody] in its traits as its bottom digivolution card.

[Security] Activate this card's [Main] effect.