Crypt Champion | Magic: The Gathering
Formats Crypt Champion is Legal in
Official Oracle Text for Crypt Champion
When Crypt Champion enters the battlefield, each player puts a creature card with converted mana cost 3 or less from his or her graveyard onto the battlefield.
When Crypt Champion enters the battlefield, sacrifice it unless was spent to cast it.
Official Rulings for Crypt Champion
5/1/2006 : If this enters the battlefield in a way other than announcing it as a spell, then the appropriate mana can't have been paid, and you'll have to sacrifice it.