Darkos, Render of Death

{p/b} can be payed with {b} or 2 life
{p/g} can be payed with {g} or 2 life
At the beginning of your upkeep, put X +1/+1 counters on Darkos, Render of Death for each permanent removed from the game last turn.
At the beginning of your opponents turn, destroy
all creatures with converted mana cost
greater than Darkos's power.