The Forest Spirit

The Forest Spirit 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 The Forest
Spirit: Choose one —
•Put X +1/+1 counters on target creature.
•The Forest Spirit deals X damage to any target.
•Create an X/X green Elemental creature token.