Marath, Will of the Wild

Marath enters the battlefield with a number of
+1/+1 counters on it equal to the amount of
mana spent to cast it.
{x}, Remove X +1/+1 counters from Marath:
Choose one —
Put X +1/+1 counters on target creature.
Marath deals X damage to any target.
Create an X/X green Elemental creature token.
X can't be 0