Warmth

Whenever an opponent casts a red spell, you gain 2 life.

Engineered Plague

As this enchantment enters, choose a creature type.
All creatures of the chosen type get -1/-1.

Swamp

Knight of Stromgald

Protection from white
{B}: This creature gains first strike until end of turn.
{B}{B}: This creature gets +1/+0 until end of turn.

Disenchant

Masticore

At the beginning of your upkeep, sacrifice this creature unless you discard a card.
{2}: This creature deals 1 damage to target creature.
{2}: Regenerate this creature.

Tainted Field

{T}: Add {C}.
{T}: Add {W} or {B}. Activate only if you control a Swamp.

Seal of Cleansing

Sacrifice this enchantment: Destroy target artifact or enchantment.

Hypnotic Specter

Flying
Whenever this creature deals damage to an opponent, that player discards a card at random.

Null Rod

Activated abilities of artifacts can't be activated.

Perish

Destroy all green creatures. They can't be regenerated.

Diabolic Edict

Target player sacrifices a creature of their choice.

Phyrexian Arena

At the beginning of your upkeep, you draw a card and you lose 1 life.

Swords to Plowshares

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

Circle of Protection: Red

{1}: The next time a red source of your choice would deal damage to you this turn, prevent that damage.

Plains

Dark Ritual

Duress

Target opponent reveals their hand. You choose a noncreature, nonland card from it. That player discards that card.

Withered Wretch

Gerrard's Verdict

Target player discards two cards. You gain 3 life for each land card discarded this way.

Vindicate

Caves of Koilos

{T}: Add {C}.
{T}: Add {W} or {B}. This land deals 1 damage to you.

Exalted Angel

Flying
Whenever this creature deals damage, you gain that much life.
Morph {2}{W}{W} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)