Vircone, Warper of Planes

Sliver creatures you control have vigilance.
{t}: Put a leadership counter on Vircone.
{4}, {ut}: You get {e}.
Pay {e}{e}{e}{e}{e}, Remove X leadership counters
from Vircone, Warper of Planes: Deal X damage
to any target. If X is seven or more, exile target permanent.