Asmodeus, Lord of Nessus

When Asmodeus, Lord of Nessus is put into the
graveyard or exile from anywhere, you may put it
into your library sixth from the top.
At the beginning of your upkeep, each player may
put a +1/+1 counter on any number of creature they
control. Those creatures gain "When this creature
dies, Asmodeus' owner creates a 1/1 red devil
creature token with "When this creature dies, it
deals 1 damage to any target""