marath, will of the wild 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. x can't be 0.
• marath deals x damage to any target. x can't be 0.
• create an x/x green elemental creature token. x can't be 0.