Swamp

Tainted Remedy

If an opponent would gain life, that player loses that much life instead.

Scoured Barrens enters tapped.
When Scoured Barrens enters, you gain 1 life.
{T}: Add {W} or {B}.

Whenever Grollub is dealt damage, each opponent gains that much life.

Until end of turn, whenever a player gains life, that player loses 2 life for each 1 life they gained.

{1}{W}{B}: Target creature gains lifelink until end of turn.
{1}{W}{B}: Whenever you gain life this turn, each opponent loses that much life.

Target player gains 2 life for each creature on the battlefield.

Put target attacking creature on the bottom of its owner's library. Its controller gains life equal to its toughness.

Exile target creature. Its controller gains life equal to its power.

Target player gains 4 life.
Landfall — If you had a land enter the battlefield under your control this turn, that player gains 8 life instead.