Option

While you have a Digimon or Tamer with [Gammamon] in its text on the field, you can ignore this card's color requirements.
[Main] Reveal the top 3 cards of your deck. Add 1 card with [Gammamon] in its text among them to the hand. Return the rest to the bottom of the deck. Then, place this card in the battle area.
[All Turns] When effects place digivolution cards under your Digimon, ＜Delay＞ (After this card is placed, by trashing it the next turn or later, activate the effect below).
・1 of your Digimon may digivolve into a Digimon card with [Gammamon] in its text in the hand without paying the cost.

[Security] You may play 1 card with [Gammamon] in its text and a play cost of 4 or less from your hand or trash without paying the cost. Then, place this card in the battle area.