Skilled Dark Magician

Each time an instant or sorcery spell is cast, put a
+1/+1 counter on this card. This card cannot have
more than three +1/+1 counters on it.
Sacrifice Skilled Dark Magician: Put a black wizard
creature card with converted mana cost less than
or equal to the power this card had when sacrificed
from your hand, library, or graveyard onto the
battlefield, then shuffle your library.