This card/Digimon is also treated as having
[Greymon] in its name.
[When Digivolving] Delete 1 of your opponent's
Digimon with a play cost of 13 or more. If no
Digimon was deleted by this effect, trash the top
card of your opponent's security stack.
[End of Your Turn] If you have a Tamer in play, this
Digimon may digivolve into 1 card with [Gaiomon] in
its name and a play cost of 13 or more in your hand,
ignoring its digivolution requirements and without
paying the cost.