Thall Biomancer Extraordinaire

Poisonous 3
During your upkeep, you may get a poison counter. You don't lose the game for having 10 or more poison counters.
Lose a poison counter: Choose one - gain 2 life, or target creature gains infect until end of turn, or put a +1/+1 counter on target creature, or put a -1/-1 counter on target creature.