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.