: Remove up to X counters from target permanent. For each counter removed this way, this creature gets +1/+0 until end of turn. ( can be paid with either or 2 life.)
You don't lose the game for having 0 or less life.
As long as you have 0 or less life, all damage is dealt to you as though its source had infect. (Damage is dealt to you in the form of poison counters.)