Crypt Champion
Creature — Zombie
Double strike
When this creature enters, each player puts a creature card with mana value 3 or less from their graveyard onto the battlefield.
When this creature enters, sacrifice it unless 
was spent to cast it.
2/2
イラスト：
The List#GK2-53アンコモン英語適正
裁定
2006年5月1日
The first triggered ability isn’t targeted, so the creature cards aren’t chosen until the ability resolves. Each player chooses which creature card from their own graveyard to return. If a player doesn’t have an applicable creature card, that player does nothing. If a player does have any applicable cards, that player must return one to the battlefield.
2006年5月1日
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.