Wild call

Whenever a creature enters, you may add an amount of equal to the number of creatures you control that share a creature type with it.

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

(: Add .)