[When Digivolving] You may play 1 level 4 or lower blue Digimon card and/or 1 level 4 or lower green Digimon card from this Digimon's digivolution cards without paying their memory costs.
Imperialdramon Dragon Mode [ST9-06] [Starter Deck: Ultimate Ancient Dragon]
Imperialdramon Dragon Mode [ST9-06] [Starter Deck: Ultimate Ancient Dragon]