Heartless Hidetsugu

{T}: Add one mana of any color.

Banefire deals X damage to any target.

If X is 5 or more, this spell can't be countered and the damage can't be prevented.

Blaze deals X damage to any target.

Burn from Within deals X damage to any target. If a creature is dealt damage this way, it loses indestructible until end of turn. If that creature would die this turn, exile it instead.

Kicker {4} (You may pay an additional {4} as you cast this spell.)

Burst Lightning deals 2 damage to any target. If this spell was kicked, it deals 4 damage instead.

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

{T}: Add one mana of any color.

{T}: Put a charge counter on Coalition Relic.

At the beginning of your precombat main phase, remove all charge counters from Coalition Relic. Add one mana of any color for each charge counter removed this way.

Coldsteel Heart enters the battlefield tapped.

As Coldsteel Heart enters the battlefield, choose a color.

{T}: Add one mana of the chosen color.

{T}: Add one mana of any color in your commander's color identity.

Sacrifice Commander's Sphere: Draw a card.

Crater's Claws deals X damage to any target.

Ferocious — Crater's Claws deals X plus 2 damage instead if you control a creature with power 4 or greater.

Indestructible

{T}: Add one mana of any color.

Defender

Whenever you cast an instant or sorcery spell, Electrostatic Field deals 1 damage to each opponent.

{T}, Sacrifice an artifact: Embraal Gear-Smasher deals 2 damage to each opponent.

Surge {X}{R} (You may cast this spell for its surge cost if you or a teammate has cast another spell this turn.)

Fall of the Titans deals X damage to each of up to two targets.

{T}: Add one mana of any color that a land an opponent controls could produce.

Firebolt deals 2 damage to any target.

Flashback {4}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Whenever you cast a noncreature spell, Firebrand Archer deals 1 damage to each opponent.

As an additional cost to cast this spell, discard X cards.

Firestorm deals X damage to each of X targets.

Flame Jab deals 1 damage to any target.

Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)

Galvanic Blast deals 2 damage to any target.

Metalcraft — Galvanic Blast deals 4 damage instead if you control three or more artifacts.

Geistflame deals 1 damage to any target.

Flashback {3}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

When Gibbering Fiend enters the battlefield, it deals 1 damage to each opponent.

Delirium — At the beginning of each opponent's upkeep, if there are four or more card types among cards in your graveyard, Gibbering Fiend deals 1 damage to that player.

{T}: Add three mana of any one color.

First strike

When Goblin Chainwhirler enters the battlefield, it deals 1 damage to each opponent and each creature and planeswalker they control.

{T}: Add {R}.

({R/P} can be paid with either {R} or 2 life.)

Gut Shot deals 1 damage to any target.

Whenever you cast an instant or sorcery spell, Guttersnipe deals 2 damage to each opponent.

{T}: Heartless Hidetsugu deals damage to each player equal to half that player's life total, rounded down.

Whenever a creature enters the battlefield under your control, Impact Tremors deals 1 damage to each opponent.

Incinerate deals 3 damage to any target. A creature dealt damage this way can't be regenerated this turn.

At the beginning of each opponent's upkeep, Iron Maiden deals X damage to that player, where X is the number of cards in their hand minus 4.

Sacrifice any number of Mountains. Landslide deals that much damage to target player or planeswalker.

Lava Dart deals 1 damage to any target.

Flashback—Sacrifice a Mountain. (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Lava Spike deals 3 damage to target player or planeswalker.

Lightning Bolt deals 3 damage to any target.

Lightning Strike deals 3 damage to any target.

{T}: Lightning-Rig Crew deals 1 damage to each opponent.

Whenever you cast a Pirate spell, untap Lightning-Rig Crew.

Defender

{T}: Lobber Crew deals 1 damage to each opponent.

Whenever you cast a multicolored spell, untap Lobber Crew.

Magma Jet deals 2 damage to any target. Scry 2.

{T}: Add {C}.

{1}, {T}, Sacrifice Mind Stone: Draw a card.

({T}: Add {R}.)

Devoid (This card has no color.)

{T}: Nettle Drone deals 1 damage to each opponent.

Whenever you cast a colorless spell, untap Nettle Drone.

{T}: Add {C}{C}.

Pillar of Flame deals 2 damage to any target. If a creature dealt damage this way would die this turn, exile it instead.

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)

{T}: Add {C}.

Price of Progress deals damage to each player equal to twice the number of nonbasic lands that player controls.

{T}: Add {C}.

{1}, {T}: Add one mana of any color.

{T}: Add {C}. You gain 1 life.

Punishing Fire deals 2 damage to any target.

Whenever an opponent gains life, you may pay {R}. If you do, return Punishing Fire from your graveyard to your hand.

Searing Blaze deals 1 damage to target player or planeswalker and 1 damage to target creature that player or that planeswalker's controller controls.

Landfall — If you had a land enter the battlefield under your control this turn, Searing Blaze deals 3 damage to that player or planeswalker and 3 damage to that creature instead.

Searing Spear deals 3 damage to any target.

As an additional cost to cast this spell, sacrifice a land.

Shard Volley deals 3 damage to any target.

{T}: Add {C}.

{2}{R}, {T}: Shivan Gorge deals 1 damage to each opponent.

Shock deals 2 damage to any target.

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

As an additional cost to cast this spell, sacrifice an artifact.

Shrapnel Blast deals 5 damage to any target.

{T}: Add {C}{C}.

Sizzle deals 3 damage to each opponent.

{T}: Add {C}{C}.

As an additional cost to cast this spell, discard a card at random.

Sonic Seizure deals 3 damage to any target.

Spark Jolt deals 1 damage to any target. Scry 1. (Look at the top card of your library. You may put that card on the bottom of your library.)

Sphere of the Suns enters the battlefield tapped and with three charge counters on it.

{T}, Remove a charge counter from Sphere of the Suns: Add one mana of any color.

Star Compass enters the battlefield tapped.

{T}: Add one mana of any color that a basic land you control could produce.

Tarfire deals 2 damage to any target.

{T}: Add {C}{C}. Activate this ability only if you control five or more lands.

Defender

{T}: Thermo-Alchemist deals 1 damage to each opponent.

Whenever you cast an instant or sorcery spell, untap Thermo-Alchemist.

{T}: Add {C}{C}{C}.

At the beginning of your end step, each opponent loses life equal to the number of tapped creatures you control.

Choose one —

• Thunderbolt deals 3 damage to target player or planeswalker.

• Thunderbolt deals 4 damage to target creature with flying.

Landfall — Whenever a land enters the battlefield under your control, Tunneling Geopede deals 1 damage to each opponent.

{T}: Add {C}{C}.

Ferocious — If you control a creature with power 4 or greater, damage can't be prevented this turn.

Wild Slash deals 2 damage to any target.

Worn Powerstone enters the battlefield tapped.

{T}: Add {C}{C}.