Gaster, Reformed

0: Distribute two -1/-1 counters among any number of target creatures, then proliferate.
0: Remove any number of counters from among permanents you control. Creatures your opponents control get -1/-1 for each counter removed this way.
-13: Each opponent loses 13 life, discards 13 cards, sacrifices 13 permanents, and exiles the top 13 cards of his or her library.