When you would use this card, if you have a Digimon with [X Antibody] in its digivolution cards in play, reduce the cost by 2.
[Main] Choose any number of your opponent's Digimon and/or Tamers whose combined play costs are less than or equal to the play cost of 1 of your Digimon with [Greymon] in its name, and delete all of the chosen cards. Then, 1 of your Digimon with [Greymon] in its name may attack a player.
Security Effect
[Security] Delete 1 of your opponent's Digimon with the highest play cost.
Rulings Q&A — 4 entries
Q1Q2134
Can I choose cards so that the combined play cost is lower than the play cost of 1 of my Digimon with [Greymon] in their name on purpose with this card's effect?
Can I attack one of my opponent's Digimon instead of a player with one of my Digimon with [Greymon] in its name that has the effect "This Digimon can also attack your opponent's unsuspended Digimon" with this card's effect?
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Official Ruling
No, you can't. This card's effect only allows you to attack a player.