Ovilath, Death-City

{b}{t}, sacrifice a creature with power 2 or more :
put a brick counter on Ovilath, Death-City.
Whenever you are dealt combat damage, remove
a brick counter from Ovilath, Death-City.
{b}{b}{t}: Destroy target nonland permanent.
Use this ability only if Ovilath, Death-City
have 5 or more brick counters on it.