Aegisdramon

“[When Digivolving] You may play 1 blue level 3 Digimon card or 1 Digimon card with [Seadramon] in its name or [Aquatic] in its traits from 1 of your blue Digimon's digivolution cards without paying the cost. <br>[Opponent's Turn] [Once Per Turn] When your opponent plays a Digimon card, you may activate 1 of this Digimon's [When Digivolving] effects.”