Black Magic Ritual

When Black Magic Ritual enters the battlefield
put 4 Magic Counters on it. At the beginning of
your 2nd Main Phase, remove a Magic Counter
and each player looses 1 life. When there are no
Magic Counters on Black Magic Ritual, sacrifice
Black Magic Ritual and one of your creatures.
Search your Hand, Library, Graveyard, and Exile
for Magician of Chaos and put it on the
Battlefield.