Arcane Melee

Instant and sorcery spells cost {2} less to cast.

Aether Sting

Whenever an opponent casts a creature spell, Aether Sting deals 1 damage to that player.

Choke

Islands don't untap during their controllers' untap steps.

Breathstealer's Crypt

If a player would draw a card, instead they draw a card and reveal it. If it's a creature card, that player discards it unless they pay 3 life.

Backfire

Enchant creature
Whenever enchanted creature deals damage to you, Backfire deals that much damage to that creature's controller.

Ashes of the Abhorrent

Players can't cast spells from graveyards or activate abilities of cards in graveyards.
Whenever a creature dies, you gain 1 life.

Call to the Grave

At the beginning of each player's upkeep, that player sacrifices a non-Zombie creature.
At the beginning of the end step, if no creatures are on the battlefield, sacrifice Call to the Grave.

Cabal Shrine

Whenever a player casts a spell, that player discards X cards, where X is the number of cards in all graveyards with the same name as that spell.

Bedlam

Blanket of Night

Each land is a Swamp in addition to its other land types.

Aether Storm

Creature spells can't be cast.
Pay 4 life: Destroy Aether Storm. It can't be regenerated. Any player may activate this ability.

Battle Strain

Whenever a creature blocks, Battle Strain deals 1 damage to that creature's controller.

Ancient Runes

At the beginning of each player's upkeep, Ancient Runes deals damage to that player equal to the number of artifacts they control.

Alexi's Cloak

Flash
Enchant creature
Enchanted creature has shroud. (It can't be the target of spells or abilities.)

Blessed Sanctuary

Prevent all noncombat damage that would be dealt to you and creatures you control.
Whenever a nontoken creature enters the battlefield under your control, create a 2/2 white Unicorn creature token.

Chill

An-Zerrin Ruins

As An-Zerrin Ruins enters the battlefield, choose a creature type.
Creatures of the chosen type don't untap during their controllers' untap steps.

Antagonism

At the beginning of each player's end step, Antagonism deals 2 damage to that player unless one of their opponents was dealt damage this turn.

Aether Flash

Whenever a creature enters the battlefield, Aether Flash deals 2 damage to it.

Awakening

At the beginning of each upkeep, untap all creatures and lands.

Bloodbond March

Whenever a player casts a creature spell, each player returns all cards with the same name as that spell from their graveyard to the battlefield.

Bazaar of Wonders

When Bazaar of Wonders enters the battlefield, exile all graveyards.
Whenever a player casts a spell, counter it if a card with the same name is in a graveyard or a nontoken permanent with the same name is on the battlefield.

Black Market

Whenever a creature dies, put a charge counter on Black Market.
At the beginning of your precombat main phase, add {B} for each charge counter on Black Market.

Go-Shintai of Life's Origin

{W}{U}{B}{R}{G}, {T}: Return target enchantment card from your graveyard to the battlefield.
Whenever Go-Shintai of Life's Origin or another nontoken Shrine enters the battlefield under your control, create a 1/1 colorless Shrine enchantment creature token.

Bereavement

Whenever a green creature dies, its controller discards a card.

Arboria

Creatures can't attack a player unless that player cast a spell or put a nontoken permanent onto the battlefield during their last turn.