Borthikk, Rafter Lurker

First strike
Covenant 1(This enters the battlefield as a Covenant,
put a +1/+1 counters on a creature you don't control.)
When an opponent sacrifices a creature, put
a +1/+1 counter on Borthikk.
When a creature an opponent controls has five
or more counters on it, it's controller sacrifices it.
Borthikk sets his own terms on any contract.