Exile target card from a graveyard.
Draw a card at the beginning of the next turn's upkeep.

Choose one —
• Destroy target creature with no counters on it.
• Remove up to three counters from target creature.

All creatures get -1/-0 until end of turn.

Until end of turn, permanents your opponents control gain "When this permanent deals damage to the player who cast Hellish Rebuke, sacrifice this permanent. You lose 2 life."

Destroy target legendary creature.

Destroy target creature or planeswalker.

Destroy target creature. Surveil 1.

Destroy target nonblack creature. Its controller loses 2 life.

All creatures get -2/-2 until end of turn.
Splice onto Arcane

If you control a Swamp, destroy target nonblack creature.
Splice onto Arcane — Exile four cards from your graveyard.

Exile the top three cards of your library in a face-down pile, then exile the top three cards of your library in another face-down pile. Look at the cards in each pile, then turn a pile of your choice face up. An opponent chooses one of those piles. Put that pile into your hand and the other into your graveyard. You lose 3 life.

Destroy target creature. Surveil 1.

Exile target creature. If that creature was a God, its controller reveals their hand and exiles all cards from it with the same name as that creature.

Destroy target Human creature.

Destroy target creature with mana value 4 or less. You gain 1 life for each creature card in its controller's hand.

Change the target of target spell with a single target. You lose life equal to that spell's mana value.

Buyback
Target creature attacks this turn if able.

As an additional cost to cast this spell, reveal a creature card from your hand.
Target creature gets -X/-X until end of turn, where X is the revealed card's mana value.

Destroy target creature. You lose 2 life.

Return one or two target creature cards from your graveyard to your hand.
Basic landcycling

Exile target colorless creature. You gain life equal to its power.

As an additional cost to cast this spell, discard X cards.
Search your library for X cards, then shuffle and put those cards on top in any order.

Put a -1/-1 counter on target creature.
Draw a card.

Target creature gets -1/-1 until end of turn for each artifact you control.

(You may cast a legendary instant only if you control a legendary creature or planeswalker.)
Destroy target creature. If its controller has more than four cards in hand, they exile cards from their hand equal to the difference.

Return target creature card from your graveyard to the battlefield. Suspect it.

Target creature gets -5/-5 until end of turn.
Descend 4 — That creature gets -10/-10 until end of turn instead if there are four or more permanent cards in your graveyard.

As an additional cost to cast this spell, sacrifice all permanents you control and discard your hand.
Target player loses 5 life.

Destroy target nonblack creature.
Gotcha — Whenever an opponent says "Kill" or "Destroy", you may say "Gotcha!" If you do, return Kill! Destroy! from your graveyard to your hand.

All damage that would be dealt this turn to target creature you control by a source of your choice is dealt to another target creature instead.