The List

Crypt Champion

Double strike
When Crypt Champion enters, each player puts a creature card with mana value 3 or less from their graveyard onto the battlefield.
When Crypt Champion enters, sacrifice it unless {R} was spent to cast it.

RNA Guild Kit

Double strike
When Crypt Champion enters the battlefield, each player puts a creature card with converted mana cost 3 or less from their graveyard onto the battlefield.
When Crypt Champion enters the battlefield, sacrifice it unless {R} was spent to cast it.

Dissension

Double strike
When Crypt Champion comes into play, each player puts a creature card with converted mana cost 3 or less from his or her graveyard into play.
When Crypt Champion comes into play, sacrifice it unless {R} was spent to play it.