Rottenmouth Viper (Promo Pack) [Bloomburrow Promos] Snow Artifact Creature Whenever you cast an instant

Whenever you cast an instant or sorcery spell

When Unclaimed Bird enters the battlefield

One part cunning

Sometimes one fireball isn't enough

Set: Foreign Black Border Type: Artifact Rarity: Uncommon Cost: {3} Basalt Monolith doesn't untap during your untap step

Rottenmouth Viper (Promo Pack) [Bloomburrow Promos] Snow Artifact Creature Whenever you cast an instantSet: Bloomburrow 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.