Acidic Soil deals damage to each player equal to the number of lands they control.

Whenever a land enters, this artifact deals 2 damage to that land's controller.

At the beginning of your upkeep, put two descent counters on this enchantment. Then each player creates X Treasure tokens and this enchantment deals X damage to each player, where X is the number of descent counters on this enchantment.

Whenever a creature dies, this artifact deals 2 damage to that creature's controller.

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

When this creature enters, it deals damage to each opponent equal to your devotion to red. (Each {R} in the mana costs of permanents you control counts toward your devotion to red.)

Whenever an opponent activates an ability of an artifact, creature, or land on the battlefield, if it isn't a mana ability, this creature deals 2 damage to that player.

Haste Whenever a player casts their second spell each turn, this creature deals 2 damage to target opponent.

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

Untap all creatures and gain control of them until end of turn. They gain haste until end of turn.

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

Whenever a creature enters, that creature's controller may have it deal damage equal to its power to any target of their choice.

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

Each opponent secretly chooses silence or snitch, then the choices are revealed. If each opponent chose silence, Prisoner's Dilemma deals 4 damage to each of them. If each opponent chose snitch, Prisoner's Dilemma deals 8 damage to each of them. Otherwise, Prisoner's Dilemma deals 12 damage to each opponent who chose silence. Flashback {5}{R}{R}

Creatures named Lightning Rager can't attack you or planeswalkers you control. At the beginning of each player's upkeep, that player creates a 5/1 red Elemental creature token named Lightning Rager. It has trample, haste, and "At the beginning of the end step, sacrifice this token."

At the beginning of each player's upkeep, this enchantment deals 1 damage to them. Whenever a player casts a spell, if no mana was spent to cast that spell, this enchantment deals 5 damage to that player. {R}: Your opponents can't gain life this turn.

Flying Whenever a player casts a spell, they lose 1 life for each spell they've cast this turn.

Haste Whenever this creature is dealt damage, it deals that much damage to any other target. If a player is dealt damage this way, they can't gain life for the rest of the game.

Whenever a player casts a spell, this enchantment deals 2 damage to that player.

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.

Players can't gain life. Damage can't be prevented. When this creature enters, it deals damage to each player equal to the number of nonbasic lands that player controls.

This spell costs {X} less to cast, where X is the total amount of noncombat damage dealt to your opponents this turn. Trample Whenever a source you control deals noncombat damage to an opponent, this creature deals that much damage to target creature or planeswalker that player controls.

If a source you control would deal noncombat damage to an opponent or a permanent an opponent controls, it deals double that damage to that player or permanent instead. {1}{R/P}{R/P}, Discard two cards: Put an indestructible counter on Solphim. ({R/P} can be paid with either {R} or 2 life.)

As an additional cost to cast this spell, discard a card. Draw two cards and create two Treasure tokens. (They're artifacts with "{T}, Sacrifice this token: Add one mana of any color.")

As an additional cost to cast this spell, sacrifice an artifact or discard a card. Draw two cards.

Draw two cards, then discard two cards. Flashback {2}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

{T}: Draw two cards. Target opponent gains control of this creature. Activate only during your turn.

Whenever an opponent draws a card, you may pay {1}. If you do, draw a card.

Menace At the beginning of your upkeep, reveal the top card of your library. Any opponent may have you put that card into your graveyard. If a player does, this creature deals damage to that player equal to that card's mana value. Otherwise, put that card into your hand.

Whenever a creature you control attacks alone, exile the top card of your library. You may play that card this turn.

As an additional cost to cast this spell, discard a card. Draw two cards.

This artifact enters with a page counter on it. Whenever your commander enters or attacks, put a page counter on this artifact. {1}, {T}, Remove a page counter from this artifact: Draw a card.

({T}: Add {R}.)

Offspring {1}{R} (You may pay an additional {1}{R} as you cast this spell. If you do, when this creature enters, create a 1/1 token copy of it.) Whenever another creature you control enters, this creature deals 1 damage to each opponent.

Whenever an artifact, creature, or enchantment enters, its controller chooses target permanent another player controls that shares a card type with it. Exchange control of those permanents.

Whenever a nontoken creature enters, if this artifact is untapped, that creature's controller creates a 1/1 colorless Myr artifact creature token.

Double strike Whenever another legendary creature you control enters, put a +1/+1 counter on Gimli. Whenever Gimli deals combat damage to a player, create a Treasure token.

Whenever a creature you control enters, this enchantment deals 1 damage to each opponent.

Haste Lieutenant — At the beginning of combat on your turn, if you control your commander, create a 1/1 colorless Thopter artifact creature token with flying. That token gains haste until end of turn.

Whenever another creature you control enters, this creature deals 1 damage to each opponent. Unearth {R} ({R}: Return this card from your graveyard to the battlefield. It gains haste. Exile it at the beginning of the next end step or if it would leave the battlefield. Unearth only as a sorcery.)

As this enchantment enters, choose Khans or Dragons. • Khans — At the beginning of your upkeep, exile the top card of your library. Until end of turn, you may play that card. • Dragons — Whenever a creature you control leaves the battlefield, this enchantment deals 1 damage to any target.

Indestructible As long as your devotion to red is less than five, Purphoros isn't a creature. Whenever another creature you control enters, Purphoros deals 2 damage to each opponent. {2}{R}: Creatures you control get +1/+0 until end of turn.

Alliance — Whenever another creature you control enters, create a Treasure token if this is the first or second time this ability has resolved this turn. Otherwise, you may pay {X}. When you do, this creature deals X damage to any target.

Alliance — Whenever another creature you control enters, target creature an opponent controls can't block this turn. If this is the second time this ability has resolved this turn, that creature attacks during its controller's next combat phase if able.

Whenever a Human you control enters, this enchantment deals 1 damage to any target.

Whenever a creature you control enters, it deals damage equal to its power to any target.

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

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

This artifact enters tapped. {T}: Add {R}.

Commander creatures you own have "Whenever this creature attacks a player, if no opponent has more life than that player, you create two Treasure tokens." (They're artifacts with "{T}, Sacrifice this token: Add one mana of any color.")

Hell to Pay deals X damage to target creature. Create a number of tapped Treasure tokens equal to the amount of excess damage dealt to that creature this way.

{T}: Add {C}. Tap an untapped legendary permanent you control: Untap this artifact.

{T}: Add {C}. {1}, {T}, Sacrifice this artifact: Draw a card.

{T}: Add one mana of any color. Tap an untapped legendary creature you control: Add one mana of any color.

Red spells you cast cost {1} less to cast.

Whenever you cast a red spell, if this creature has fewer than three +1/+1 counters on it, put a +1/+1 counter on this creature. Remove three +1/+1 counters from this creature: Add {R}{R}{R}.

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

When this creature enters, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle. When this creature dies, you may draw a card.

{T}, Tap an untapped creature you control: Add one mana of any color.

Choose one — • Abrade deals 3 damage to target creature. • Destroy target artifact.

This spell costs {1} less to cast for each creature on the battlefield. Blasphemous Act deals 13 damage to each creature.

The owner of target permanent shuffles it into their library, then reveals the top card of their library. If it's a permanent card, they put it onto the battlefield.

Earthquake deals X damage to each creature without flying and each player.

For each player, choose target nonenchantment, nonland permanent that player controls. Those permanents' owners shuffle them into their libraries. Each player who controlled one of those permanents exiles cards from the top of their library until they exile a nonland card, then puts the rest on the bottom of their library in a random order. Each player may cast the nonland card they exiled without paying its mana cost.

Lightning Bolt deals 3 damage to any target.

Mizzium Mortars deals 4 damage to target creature you don't control. Overload {3}{R}{R}{R} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Replicate {R} (When you cast this spell, copy it for each time you paid its replicate cost. You may choose new targets for the copies.) Destroy target artifact.

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.")