Chain Lightning

Chain Lightning deals 3 damage to any target. Then that player or that permanent’s controller may pay . If the player does, they may copy this spell and may choose a new target for that copy.

Expunge

Destroy target nonartifact, nonblack creature. It can’t be regenerated.
Cycling (, Discard this card: Draw a card.)

Shelter

Target creature you control gains protection from the color of your choice until end of turn.
Draw a card.

Magus of the Mirror

, Sacrifice Magus of the Mirror: Exchange life totals with target opponent. Activate only during your upkeep.

Tragic Slip

Target creature gets -1/-1 until end of turn.
Morbid — That creature gets -13/-13 until end of turn instead if a creature died this turn.

Moment of Heroism

Target creature gets +2/+2 and gains lifelink until end of turn. (Damage dealt by the creature also causes its controller to gain that much life.)

Double Stroke

Hidden agenda (Start the game with this conspiracy face down in the command zone and secretly choose a card name. You may turn this conspiracy face up any time and reveal that name.)
Whenever you cast an instant or sorcery spell with the chosen name, you may copy it. You may choose new targets for the copy.

Fireshrieker

Equipped creature has double strike. (It deals both first-strike and regular combat damage.)
Equip (: Attach to target creature you control. Equip only as a sorcery.)

Pernicious Deed

, Sacrifice Pernicious Deed: Destroy each artifact, creature, and enchantment with mana value X or less.

Zealous Persecution

Until end of turn, creatures you control get +1/+1 and creatures your opponents control get -1/-1.

Dance of Flame

Whenever a Reveler attacks, Dance of Flame deals 1 damage to each player.

Pheres-Band Thunderhoof

Heroic — Whenever you cast a spell that targets Pheres-Band Thunderhoof, put two +1/+1 counters on Pheres-Band Thunderhoof.

Tragic Slip

Target creature gets -1/-1 until end of turn.
Morbid — That creature gets -13/-13 until end of turn instead if a creature died this turn.

Nekrataal

First strike
When Nekrataal enters, destroy target nonartifact, nonblack creature. That creature can’t be regenerated.

Merfolk Wayfinder

Flying
When Merfolk Wayfinder enters, reveal the top three cards of your library. Put all Island cards revealed this way into your hand and the rest on the bottom of your library in any order.

Deepwater Hypnotist

Inspired — Whenever Deepwater Hypnotist becomes untapped, target creature an opponent controls gets -3/-0 until end of turn.

Shrike Harpy

Flying
Tribute 2 (As this creature enters, an opponent of your choice may put two +1/+1 counters on it.)
When Shrike Harpy enters, if tribute wasn’t paid, target opponent sacrifices a creature of their choice.

Stormscape Battlemage

Kicker and/or (You may pay an additional and/or as you cast this spell.)
When Stormscape Battlemage enters, if it was kicked with its kicker, you gain 3 life.
When Stormscape Battlemage enters, if it was kicked with its kicker, destroy target nonblack creature. That creature can’t be regenerated.

Satyr Piper

: Target creature must be blocked this turn if able.

Shredding Winds

Shredding Winds deals 7 damage to target creature with flying.

Shower of Sparks

Shower of Sparks deals 1 damage to target creature and 1 damage to target player or planeswalker.

Moment of Heroism

Target creature gets +2/+2 and gains lifelink until end of turn. (Damage dealt by the creature also causes its controller to gain that much life.)