2 White Quantum
Regenerate 3 life at the end of turn. Removes poison counters as well (up to 3)
Upgrade:
1 White Quantum
Regenerate 3 life at the end of turn. Removes poison counters as well (up to 3)
Pretty straightforward, like a Deadly Poison, except slightly better, because, well, gaining life doesn't win the game for you like making your opponent lose it does.
EG: If you have 2 poison counters on you, you'll only regenerate 1 life.