Undersea Ruins
Aquapolis

#138 Undersea Ruins - Aquapolis (ecard2)

Undersea Ruins is a Trainer card from the E-Card series, released in the Aquapolis set on January 15, 2003. Designed by artist Midori Harada, it is classified as Uncommon rarity. The card functions as a Stadium-type Trainer, remaining in play when played but is discarded if another Stadium card enters the battlefield. Its primary effect allows a player to flip a coin once per turn, with heads granting the ability to devolve an Evolved Pokémon by discarding its top Evolution card. This action reduces the targeted Pokémon to its base form, effectively removing its evolved state. The card’s rules emphasize conditional activation during a player’s turn, prior to attacking, and require the player to choose a specific Evolved Pokémon in play. Its mechanics focus on altering the battlefield state through strategic deviation of evolved forms. The card’s design and function align with the thematic elements of the Aquapolis set, which explores underwater environments.