Set:	Bloomburrow Prerelease Promos
Type:	Creature Elemental Snake
Rarity:	Mythic
Cost:	{5}{B}

As an additional cost to cast this spell, you may sacrifice any number of nonland permanents. This spell costs 1 less to cast for each permanent sacrificed this way.
Whenever Rottenmouth Viper enters or attacks, put a blight counter on it. Then for each blight counter on it, each opponent loses 4 life unless that player sacrifices a nonland permanent or discards a card.