Reciprocate

Exile target creature that dealt damage to you this turn.

Mana Leak

Counter target spell unless its controller pays {3}.

Hinder

Counter target spell. If that spell is countered this way, put that card on your choice of the top or bottom of its owner's library instead of into that player's graveyard.

Lightning Helix

Lightning Helix deals 3 damage to any target and you gain 3 life.

Cruel Edict

Target opponent sacrifices a creature of their choice.

Oxidize

Destroy target artifact. It can't be regenerated.

Jedit Ojanen

Terror

Destroy target nonartifact, nonblack creature. It can't be regenerated.

Condemn

Put target attacking creature on the bottom of its owner's library. Its controller gains life equal to its toughness.

Harrow

As an additional cost to cast this spell, sacrifice a land.
Search your library for up to two basic land cards, put them onto the battlefield, then shuffle.

Giant Growth

Target creature gets +3/+3 until end of turn.

Psionic Blast

Psionic Blast deals 4 damage to any target and 2 damage to you.

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.

Dark Confidant

At the beginning of your upkeep, reveal the top card of your library and put that card into your hand. You lose life equal to its mana value.

Bituminous Blast

Cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order.)
Bituminous Blast deals 4 damage to target creature.

Lightning Bolt

Lightning Bolt deals 3 damage to any target.

Fireball

This spell costs {1} more to cast for each target beyond the first.
Fireball deals X damage divided evenly, rounded down, among any number of targets.

Putrefy

Destroy target artifact or creature. It can't be regenerated.

Recollect

Return target card from your graveyard to your hand.

Disenchant

Wrath of God

Destroy all creatures. They can't be regenerated.

Pyroclasm

Pyroclasm deals 2 damage to each creature.

Zombify

Return target creature card from your graveyard to the battlefield.

Mortify

Omnath, Locus of Creation

When Omnath enters, draw a card.
Landfall — Whenever a land you control enters, you gain 4 life if this is the first time this ability has resolved this turn. If it's the second time, add {R}{G}{W}{U}. If it's the third time, Omnath deals 4 damage to each opponent and each planeswalker you don't control.