Poke-POWER · Gather Ice
Once during your turn (before your attack), when you play Walrein from your hand to evolve 1 of your Pokémon, you may attach as many Water Energy cards from your hand to Walrein as you like.

HP 140 · Water
Pokémon — Stage 2
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Once during your turn (before your attack), when you play Walrein from your hand to evolve 1 of your Pokémon, you may attach as many Water Energy cards from your hand to Walrein as you like.
Cost: Water, Water, Colorless, Colorless
Discard an Energy card attached to Walrein and then discard an Energy card attached to the Defending Pokémon.