Pontiff Brack, Debt Collector

Extort
Whenever you pay {b} for Extort, create a
1/1 black Thrall creature token.
Whenever you pay {w} for Extort, create a
1/1 white Spirit creature token with flying.
Sacrifice a Thrall: Pontiff Brack, Debt Collector gains Indestructible until end
of turn.