Iulazi, the Destroyer

Flying, trample, haste
Whenever Iulazi deals combat damage to a
player, each player chooses a permanent type
of a permanent that player controls and
sacrifices all non-Demon permanents of the
chosen type, put a +1/+1 counter on Iulazi for
each permanent sacrificed this way.
A force of death and destruction tethered only by
promises of its doom.