Koulop Unborn

{w} {u} {b} , {t} : Put a +1/+1 counter on Koulop Unborn. You may exile the top X cards of your library, where X is Koulop Unborn's power. Put a creature from the exiled cards or your hand who's cost is less than or equal to Koulop Unborn's power onto the battlefield tapped.