Demon Henchman

When Demon Henchman enters the battlefield,
send a creature your opponent controls to hell.
(That creature is exiled, then takes 1 damage each
time your opponent casts a spell. Your opponent
can pay {5} and bring it back to the battlefield
tapped.)
"I don't see why humans hate hell so much. It's a
great place!"
-Demon Proverb