Gankoomon

＜Blocker＞ (This Digimon can block in the blocker timing.) [On Play] [When Digivolving] You may play 1 Digimon card with [Sistermon] in its name from your trash or 1 Digimon card with the [Royal Knight] trait from the digivolution cards of your Digimon in the breeding area without paying its cost. You can't play [Gankoomon] or [Omnimon] with this effect.