pokemon wailord card POKÉMON GAME s11 026/100 U RarityUltra Rare Hit Points250 HP Water Pokemon Card "Wailord" sv9 103/100

The effects from Tenth District Hero's abilities overwrite other effects that set power and/or toughness if and only if those effects existed before the ability resolved

We know that "actions" include casting a spell, activating an ability, conceding, and anything worded "[a player] may do [thing], if not [other thing]" or "[a player] does [thing] unless [a player] does [other thing]"

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This Power boost is during your and your opponents turn, which means youre setting up heavier attacks to force more Counter cards while also making it harder for the opposing players attacks to go through