Lucifer, Lost Son

Deathtouch, Afflict 2
Whenever a creature enters the battlefield under
your control, put a Temptation counter on it. If
that creature would die, instead, remove a
Temptation counter from it and it becomes a 1/1 Red Devil token creature with "When this creature
dies, it deals 1 damage to any target".

"He is less than those he corrupts, for his avarice made
even Heaven inadequate."