Marath, Will of the Wilds

Marath enters with a number of +1/+1 counters on it equal to the amount of mana spent to cast it.
Variable Colorless, 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.