
For each opponent, exile up to one target permanent that player controls with an even mana valuemana valueZero is even.. (Zero is even.)
AdamantAdamantAbility word: is better if at least three mana of one colour was spent to cast the spell. — If at least three colorless mana was spent to cast this spell, return a permanent card with an odd mana valuemana valueThe total amount of mana in a card's cost, ignoring colour. A card costing has mana value 4. X counts as 0 except on the stack. from your graveyard to the battlefield.
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Read from the rules text. A card that enables a keyword makes or is the thing; a card that rewards it gets better when you have it. Two cards interact when one enables what the other rewards.