Swan Song

Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying.

Reclamation Sage

When this creature enters, you may destroy target artifact or enchantment.

Stifle

Counter target activated or triggered ability. (Mana abilities can't be targeted.)

Chaos Warp

The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.

Bedevil

Destroy target artifact, creature, or planeswalker.

Beast Within

Destroy target permanent. Its controller creates a 3/3 green Beast creature token.

Swords to Plowshares

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

Strix Serenade

Counter target artifact, creature, or planeswalker spell. Its controller creates a 2/2 blue Bird creature token with flying.

Arcane Denial

Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep.
You draw a card at the beginning of the next turn's upkeep.

Despark

Exile target permanent with mana value 4 or greater.

Anguished Unmaking

Exile target nonland permanent. You lose 3 life.

Terminate

Destroy target creature. It can't be regenerated.

Power Word Kill

Destroy target non-Angel, non-Demon, non-Devil, non-Dragon creature.

Consign to Memory

Replicate {1} (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.)
Counter target triggered ability or colorless spell.

Spell Pierce

Counter target noncreature spell unless its controller pays {2}.

Path to Exile

Exile target creature. Its controller may search their library for a basic land card, put that card onto the battlefield tapped, then shuffle.

Counterspell

Feed the Swarm

Destroy target creature or enchantment an opponent controls. You lose life equal to that permanent's mana value.