When Akki Blizzard-Herder dies, each player sacrifices a land.

Whenever a land enters the battlefield, Ankh of Mishra deals 2 damage to that land's controller.

When Blood Sun enters the battlefield, draw a card.

All lands lose all abilities except mana abilities.

Whenever a player taps a nonbasic land for mana, Burning Earth deals 1 damage to that player.

Whenever a creature dies, that creature's controller sacrifices a land.

{3}, Sacrifice Burnished Hart: Search your library for up to two basic land cards, put them onto the battlefield tapped, then shuffle.

Destroy X target artifacts.

As Caged Sun enters the battlefield, choose a color.

Creatures you control of the chosen color get +1/+1.

Whenever a land's ability causes you to add one or more mana of the chosen color, add one additional mana of that color.

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.

At the beginning of each player's end step, Citadel of Pain deals X damage to that player, where X is the number of untapped lands they control.

Coldsteel Heart enters the battlefield tapped.

As Coldsteel Heart enters the battlefield, choose a color.

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

Multikicker {1} (You may pay an additional {1} any number of times as you cast this spell.)

Choose any target, then choose another target for each time this spell was kicked. Comet Storm deals X damage to each of them.

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

Sacrifice Commander's Sphere: Draw a card.

You may play lands from your graveyard.

Indestructible

{T}: Add {C}.

Indestructible

{T}: Add one mana of any color.

Detritivore's power and toughness are each equal to the number of nonbasic land cards in your opponents' graveyards.

Suspend X--{X}{3}{R}. X can't be 0. (Rather than cast this card from your hand, you may pay {X}{3}{R} and exile it with X time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, cast it without paying its mana cost. It has haste.)

Whenever a time counter is removed from Detritivore while it's exiled, destroy target nonbasic land.

Flash

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

Whenever a land is put into a graveyard from the battlefield, Dingus Egg deals 2 damage to that land's controller.

{2}{R}, {T}: Destroy target nonbasic land.

Morph {R} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

{2}{R}, {T}: Destroy target nonbasic land.

Target player sacrifices a land.

Threshold -- Each player sacrifices all lands they control instead if seven or more cards are in your graveyard.

{T}: Add {C}.

{2}, {T}, Sacrifice Field of Ruin: Destroy target nonbasic land an opponent controls. Each player searches their library for a basic land card, puts it onto the battlefield, then shuffles.

Fire Diamond enters the battlefield tapped.

{T}: Add {R}.

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

Destroy all nonbasic lands. For each land destroyed this way, its controller may search their library for a basic land card and put it onto the battlefield. Then each player who searched their library this way shuffles.

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

As Gauntlet of Power enters the battlefield, choose a color.

Creatures of the chosen color get +1/+1.

Whenever a basic land is tapped for mana of the chosen color, its controller adds an additional one mana of that color.

{T}: Add {C}.

{T}, Sacrifice Ghost Quarter: Destroy target land. Its controller may search their library for a basic land card, put it onto the battlefield, then shuffle.

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

Goblin Sharpshooter doesn't untap during your untap step.

Whenever a creature dies, untap Goblin Sharpshooter.

{T}: Goblin Sharpshooter deals 1 damage to any target.

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

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

At the beginning of your upkeep, if there are seven or more lands on the battlefield, sacrifice Impending Disaster and destroy all lands.

Imprint -- When Invader Parasite enters the battlefield, exile target land.

Whenever a land with the same name as the exiled card enters the battlefield under an opponent's control, Invader Parasite deals 2 damage to that player.

{T}: Add {R}.

When Keldon Firebombers enters the battlefield, each player sacrifices all lands they control except for three.

{T}: Add {C}.

{1}{R}, {T}: Create a 0/1 red Kobold creature token named Kobolds of Kher Keep.

Nonbasic lands are Mountains.

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

Memorial to War enters the battlefield tapped.

{T}: Add {R}.

{4}{R}, {T}, Sacrifice Memorial to War: Destroy target land.

{T}: Add {C}.

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

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

If this spell was kicked, it has split second. (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.)

Molten Disaster deals X damage to each creature without flying and each player.

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.)

At the beginning of your postcombat main phase, add {R} for each 1 life your opponents have lost this turn.

{T}: Add {C}.

{2}, {T}: Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.)

As Paradise Plume enters the battlefield, choose a color.

Whenever a player casts a spell of the chosen color, you may gain 1 life.

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

Whenever a player taps a land for mana, if it's not that player's turn, destroy that land.

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

As Prism Ring enters the battlefield, choose a color.

Whenever you cast a spell of the chosen color, you gain 1 life.

{T}: Add {R}. When that mana is spent to cast a red instant or sorcery spell, copy that spell and you may choose new targets for the copy.

Each player discards their hand, then draws seven cards.

Miracle {1}{R} (You may cast this card for its miracle cost when you draw it if it's the first card you drew this turn.)

Copy target instant or sorcery spell. You may choose new targets for the copy.

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

Destroy all nonbasic lands.

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

When Solemn Simulacrum enters the battlefield, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

When Solemn Simulacrum dies, you may draw a card.

At the beginning of each player's end step, that player sacrifices an untapped land.

Each player may play an additional land during each of their turns.

Whenever a land is tapped for mana, return it to its owner's hand.

{T}: Add {C}.

{T}, Sacrifice Strip Mine: Destroy target land.

At the beginning of each player's upkeep, Sulfuric Vortex deals 2 damage to that player.

If a player would gain life, that player gains no life instead.

Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)

Equip {1}

Each player sacrifices X lands.

Whenever a land enters the battlefield, tap all lands its controller controls.

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

Each player sacrifices a land.

Valakut, the Molten Pinnacle enters the battlefield tapped.

Whenever a Mountain enters the battlefield under your control, if you control at least five other Mountains, you may have Valakut, the Molten Pinnacle deal 3 damage to any target.

{T}: Add {R}.

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.")

{1}{R}, {T}: Destroy target artifact. Viashino Heretic deals damage to that artifact's controller equal to the artifact's mana value.

You may choose new targets for target instant or sorcery spell. Then copy that spell. You may choose new targets for the copy.

Each player sacrifices four lands. Wildfire deals 4 damage to each creature.

Worn Powerstone enters the battlefield tapped.

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

Whenever a land enters the battlefield, Zo-Zu the Punisher deals 2 damage to that land's controller.

Sacrifice a land: You gain 2 life.