Molly Hayes, Runaway {2}{R}
Legendary Creature — Mutant Hero
Power-up — {5}{R}: Put two +1/+1 counters on Molly Hayes. Exile the top card of your library. Until the end of your next turn, you may play that card. (Activate each power-up ability only once. Reduce the cost by her mana cost if she entered this turn.)
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Cards that do something similar expected a card that isn't here?
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"Power-up — {4}{R}: Put two +1/+1 counters on this creature. It deals 1 damage to any target."