Etrata's Trump Card

{4}: Create a 1/1 black Bat creature token with
Flying and Hemorrhage (This creature deals
damage to players in the form of Bleed counters. At
the begining of their upkeep, players lose 1 life for each
Bleed counter they have.)
Sacrifice all non-Bat permanents you control:
Put a Bleed counter on each oponent. Then
double the number of Bleed counters each
oponent has.