Karshenna, Godless Bishop

Vigilance, lifelink

As additional cost to cast this spell sacrifice two creatures or artifacts, if were sacrificed two tokens this way, put an indestructible counter on Karshenna, Godless Bishop.

Whenever a token enters the battlefield under your control, your opponents lose 1 life and you gain 1 life.
Whenever a token under your control leaves the battlefiled proliferate.
Oh my little mites and proud phyrexians, for our beloved Norn!