Teysa, Lord of the New Obzedat

When a spirit you control blocks or is blocked, each opponent loses 1 life and you
gain 1 life.
Gravepact 4 (This creature enters the battlefield with 4 pact counters on it. When a creature you control dies you may exile it and remove a pact counter from this creature. If you
do, create a 1/1 white and black Spirit creature token with flying.)