Rottenmouth Viper (Borderless) [Bloomburrow] Human Alien Shapeshifter you gain control of target

you gain control of target opponent during that player's next turn

you gain 4 life if this is the first time this ability has resolved this turn

" —Development log of Willa

" —Alexander Pope

Rottenmouth Viper (Borderless) [Bloomburrow] Human Alien Shapeshifter you gain control of targetSet: Bloomburrow 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.