Anointer of Valor {5}{W}
Creature — Angel
Flying
Whenever a creature attacks, you may pay {3}. When you do, put a +1/+1 counter on that creature.
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Cards that do something similar expected a card that isn't here?
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"Whenever this creature attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it."
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"Whenever this creature attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it."
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"Whenever this creature attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it."
Thriving Rats 80%
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"Whenever this creature attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it."
Thriving Turtle 80%
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"Whenever this creature attacks, you may pay {E}{E}. If you do, put a +1/+1 counter on it."
Thriving Skyclaw 80%
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"Whenever this creature attacks, you may pay {E}{E}{E}. If you do, put a +1/+1 counter on it."