Simian Spirit Guide

Jiwari, the Earth Aflame

{X}{R}, {T}: Jiwari deals X damage to target creature without flying.
Channel — {X}{R}{R}{R}, Discard this card: It deals X damage to each creature without flying.

Manabarbs

Whenever a player taps a land for mana, this enchantment deals 1 damage to that player.

Greater Stone Spirit

This creature can't be blocked by creatures with flying.
{2}{R}: Until end of turn, target creature gets +0/+2 and gains "{R}: This creature gets +1/+0 until end of turn."

Lava Spike

Lava Spike deals 3 damage to target player or planeswalker.

Myojin of Infinite Rage

Myojin of Infinite Rage enters with a divinity counter on it if you cast it from your hand.
Myojin of Infinite Rage has indestructible as long as it has a divinity counter on it.
Remove a divinity counter from Myojin of Infinite Rage: Destroy all lands.

Blademane Baku

Whenever you cast a Spirit or Arcane spell, you may put a ki counter on this creature.
{1}, Remove X ki counters from this creature: For each counter removed, this creature gets +2/+0 until end of turn.

Torbran, Thane of Red Fell

If a red source you control would deal damage to an opponent or a permanent an opponent controls, it deals that much damage plus 2 instead.

Everflame Eidolon

Bestow {2}{R} (If you cast this card for its bestow cost, it's an Aura spell with enchant creature. It becomes a creature again if it's not attached to a creature.)
{R}: This creature gets +1/+0 until end of turn. If it's an Aura, enchanted creature gets +1/+0 until end of turn instead.
Enchanted creature gets +1/+1.

Furnace of Rath

If a source would deal damage to a permanent or player, it deals double that damage to that permanent or player instead.

Lavaborn Muse

At the beginning of each opponent's upkeep, if that player has two or fewer cards in hand, this creature deals 3 damage to that player.

Barrage of Expendables

{R}, Sacrifice a creature: This enchantment deals 1 damage to any target.

Rupture

Sacrifice a creature. Rupture deals damage equal to that creature's power to each creature without flying and each player.

Goblin Bombardment

Sacrifice a creature: This enchantment deals 1 damage to any target.

Ryusei, the Falling Star

Flying
When Ryusei dies, it deals 5 damage to each creature without flying.

Ashnod's Altar

Spawning Pit

Sacrifice a creature: Put a charge counter on Spawning Pit.
{1}, Remove two charge counters from Spawning Pit: Create a 2/2 colorless Spawn artifact creature token.

Glacial Ray

Glacial Ray deals 2 damage to any target.
Splice onto Arcane {1}{R} (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

Overblaze

Each time target permanent would deal damage to a permanent or player this turn, it deals double that damage to that permanent or player instead.
Splice onto Arcane {2}{R}{R} (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

Soul of Magma

Whenever you cast a Spirit or Arcane spell, this creature deals 1 damage to target creature.

Frostling

Sacrifice this creature: It deals 1 damage to target creature.

Mannichi, the Fevered Dream

{1}{R}: Switch each creature's power and toughness until end of turn.

Shinen of Fury's Fire

Haste
Channel — {R}, Discard this card: Target creature gains haste until end of turn.

Pain Kami

{X}{R}, Sacrifice this creature: It deals X damage to target creature.

Brutal Deceiver

{1}: Look at the top card of your library.
{2}: Reveal the top card of your library. If it's a land card, this creature gets +1/+0 and gains first strike until end of turn. Activate only once each turn.

Desperate Ritual

Add {R}{R}{R}.
Splice onto Arcane {1}{R} (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

Thermopod

{S}: This creature gains haste until end of turn. ({S} can be paid with one mana from a snow source.)
Sacrifice a creature: Add {R}.

Keldon Necropolis

{T}: Add {C}.
{4}{R}, {T}, Sacrifice a creature: Keldon Necropolis deals 2 damage to any target.

Oni of Wild Places

Haste
At the beginning of your upkeep, return a red creature you control to its owner's hand.

Ghost-Lit Raider

{2}{R}, {T}: This creature deals 2 damage to target creature.
Channel — {3}{R}, Discard this card: It deals 4 damage to target creature.

Shimatsu the Bloodcloaked

As Shimatsu enters, sacrifice any number of permanents. Shimatsu enters with that many +1/+1 counters on it.

Kurkesh, Onakke Ancient

Whenever you activate an ability of an artifact, if it isn't a mana ability, you may pay {R}. If you do, copy that ability. You may choose new targets for the copy.

Malignus

Malignus's power and toughness are each equal to half the highest life total among your opponents, rounded up.
Damage that would be dealt by this creature can't be prevented.

Phyrexian Altar

Sacrifice a creature: Add one mana of any color.

Hearth Kami

{X}, Sacrifice this creature: Destroy target artifact with mana value X.

Ore Gorger

Whenever you cast a Spirit or Arcane spell, you may destroy target nonbasic land.

Ashen Monstrosity

Haste
This creature attacks each combat if able.

Dark-Dweller Oracle

{1}, Sacrifice a creature: Exile the top card of your library. You may play that card this turn. (You still pay its costs. You can play a land this way only if you have an available land play remaining.)

Scorched Rusalka

{R}, Sacrifice a creature: This creature deals 1 damage to target player or planeswalker.

Kami of Fire's Roar

Whenever you cast a Spirit or Arcane spell, target creature can't block this turn.

Yuki-Onna

When this creature enters, destroy target artifact.
Whenever you cast a Spirit or Arcane spell, you may return this creature to its owner's hand.

Laelia, the Blade Reforged

Haste
Whenever Laelia attacks, exile the top card of your library. You may play that card this turn.
Whenever one or more cards are put into exile from your library and/or your graveyard, put a +1/+1 counter on Laelia.

Earthshaker

Whenever you cast a Spirit or Arcane spell, this creature deals 2 damage to each creature without flying.

Carnage Altar

War's Toll

Whenever an opponent taps a land for mana, tap all lands that player controls.
If a creature an opponent controls attacks, all creatures that opponent controls attack if able.

Blood Age General

{T}: Attacking Spirits get +1/+0 until end of turn.

Through the Breach

You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice that creature at the beginning of the next end step.
Splice onto Arcane {2}{R}{R} (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

Adamaro, First to Desire

Adamaro's power and toughness are each equal to the number of cards in the hand of the opponent with the most cards in hand.

Glitterfang

Haste
At the beginning of the end step, return this creature to its owner's hand.

Pillardrop Warden

Reach
{2}, {T}, Sacrifice this creature: Return target instant or sorcery card from your graveyard to your hand. Activate only as a sorcery.

Path of Anger's Flame

Creatures you control get +2/+0 until end of turn.

Sulfuric Vortex

At the beginning of each player's upkeep, this enchantment deals 2 damage to that player.
If a player would gain life, that player gains no life instead.

Fire-Omen Crane

Flying (This creature can't be blocked except by creatures with flying or reach.)
Whenever this creature attacks, it deals 1 damage to target creature an opponent controls.

Vandalblast

Destroy target artifact you don't control.
Overload {4}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Skyfire Kirin

Flying
Whenever you cast a Spirit or Arcane spell, you may gain control of target creature with that spell's mana value until end of turn.

High Market

{T}: Add {C}.
{T}, Sacrifice a creature: You gain 1 life.

Eidolon of the Great Revel

Whenever a player casts a spell with mana value 3 or less, this creature deals 2 damage to that player.