Rob, Pact Seeker

Partner with Davnor, Pact Breaker.
lifelink, Deathtouch
At the beginning of your upkeep place a
Ritual counter on Rob, Pact Seeker. whenever
Rob, Pact Seeker Attacks or Blocks remove a
Ritual Counter at the end of that combat phase.
As long as Rob, Pact Seeker has a Ritual counter
on it, it is indestructible.