[When Attacking] You may play 1 level 3 Digimon card
or 1 [Whamon] from this Digimon's digivolution cards
as another Digimon without paying its memory cost.
[Your Turn] When you play a Digimon from one of your
Digimon's digivolution cards, return 1 of your
opponent's level 4 or lower Digimon to its owner's
hand. Trash all of the digivolution cards of that
Digimon.