Blind Shriek Snarler

Mangle (At the end of the Cleanup step, put
a number of -1/-1 tokens on each creature equal
to the damage Blind Shriek Snarler caused it.)
{1}{u}: Once a turn, Blind Shriek Snarler gains
Flying and +1/+0 until the end of the turn.
If Blind Shriek Snarler attacks or blocks there is
more than one opponent or attacking creature,
it does so at random.
"Failed as minions, yet freed on the other side
as weapons of chaos."