Scoured Barrens

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

Marauding Blight-Priest

Whenever you gain life, each opponent loses 1 life.

Stab

Target creature gets -2/-2 until end of turn.

Deadly Dispute

As an additional cost to cast this spell, sacrifice an artifact or creature.
Draw two cards and create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Helpful Hunter

Swamp

Infestation Sage

When this creature dies, create a 1/1 black and green Insect creature token with flying.

Healer's Hawk

Corrupted Conviction

As an additional cost to cast this spell, sacrifice a creature.
Draw two cards.

Acrobatic Maneuver

Exile target creature you control, then return that card to the battlefield under its owner's control.
Draw a card.

Impassioned Orator

Whenever another creature you control enters, you gain 1 life.

Plains

Agate-Blade Assassin

Whenever Agate-Blade Assassin attacks, defending player loses 1 life and you gain 1 life.

Forlorn Flats

Forlorn Flats enters tapped.
When Forlorn Flats enters, it deals 1 damage to target opponent.
{T}: Add {W} or {B}.

Sanguine Syphoner

Whenever this creature attacks, each opponent loses 1 life and you gain 1 life.

Lifecreed Duo

Flying
Whenever another creature you control enters, you gain 1 life.