Rottenmouth Viper (Borderless) [BLB - 290] Language:English twice that many +1/+1 counters

twice that many +1/+1 counters are put on that creature instead

a new song

Rules Text Contains: Whenever an opponent casts their first noncreature spell each turn

it becomes the following:

Rules Text Contains: When Chthonian Nightmare enters the battlefield

Rottenmouth Viper (Borderless) [BLB - 290] Language:English twice that many +1/+1 countersRarity: M #: 290 Creature Type or Sub Type: Creature Elemental Snake P: 6 T: 6 Rules Text Contains: 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