Vormoth, of Slain Knights

Indestructible, Shroud
Eternal 4 (When you control three creatures of the same type as this card and a fourth enters the battlefield give this creature an eternal counter)

{t}, Remove an eternal counter from Vormoth, of Slain Knights, give all creatures you control with an eternal counter +7/+7 while Vormoth, of Slain Knights is on the battlefield.