Rotting Fensnake [Innistrad] Yanling sacrifice it unless {G} was

sacrifice it unless {G} was spent to cast it

You can only use 1 of the following effects of "Kuribabylon" per turn

Set: Legendary Duelists: Season 2 Card type: Quick-Play Spell Rarity: Ultra Rare

Set: Friday Night Magic 2011 Type: Sorcery Rarity: Rare Cost: {2}{G} Search your library for up to two basic land cards

Set: Structure Deck: Emperor of Darkness Card type: Quick Play Spell Rarity: Common You can Tribute 1 face-up Level 5 or higher Normal Summoned/Set monster

Rotting Fensnake [Innistrad] Yanling sacrifice it unless {G} wasSet: Innistrad Type: Creature Zombie Snake Rarity: Common Cost: {3}{B} Its venom sacs are long gone, but its crushing strength is somehow greater than ever.