Poison Ivy, The Undying

Poison Ivy, The Undying enters the battlefield
with +1/+1 counters on it equal to the amount
of mana spent to cast it.
{x}, Remove X +1/+1 counters from Poison Ivy:
Choose one — Put X +!/+1 counters on target creature; or Poison Ivy deals X damage to target creature or player; or put a X/X green Elemental creature onto the battlefield.