Selos, Bloody Adjudicator

At the beginning of each player's upkeep, that
player may sacrifice target creature you control
other than this creature. Otherwise, you may
sacrifice target creature that player controls.
Each time a creature is sacrificed, gain 1 life and
create a 0/1 white Spirit creature token
with flying.
"Tonight, heads will roll, and blood will be spilled
for my gain. I care little who's."