Rottenmouth Viper - [Foil, Showcase] Bloomburrow (BLB) DOM As Cavern of Souls enters

As Cavern of Souls enters the battlefield

During each of your turns

Gruul raider

Trample Terravore's power and toughness are each equal to the number of land cards in all graveyards

9 Shadows over Innistrad Booster Packs

Rottenmouth Viper - [Foil, Showcase] Bloomburrow (BLB) DOM As Cavern of Souls entersAs 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.