Omnath, Locus of Power

Green mana doesn't empty from your mana pool
as steps and phases end.
Remove X green mana from your mana pool:
put X power counters on Omnath, Locus of
Power.
Remove three power counters from Omnath:
Draw a card and you gain 2 life.
Remove five power counters from Omnath: Put a
+1/+1 counter on Omnath and Omnath deals 3
damage to any target.