Your opponent depletes a Memento.
Survivor 10: Deal +1 damage for each copy of Rain of Destruction in your deck.
Survivor 15: Shuffle 3 copies of Rain of Destruction into your deck.
Survivor 20: Deal +1 damage for each copy of Rain of Destruction in your depletion pile.
"They say it rains on the just and the unjust alike. But that's just because the heavens have a lousy targeting system. I have a better one..."