You may play lands from your graveyard.

Fire Diamond enters the battlefield tapped. {T}: Add {R}.

Creatures with power 3 or greater don't untap during their controllers' untap steps.

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

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

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

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}{C}{C}.

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

Haste Echo {3}{R} (At the beginning of your upkeep, if this came under your control since the beginning of your last upkeep, sacrifice it unless you pay its echo cost.) When Avalanche Riders enters the battlefield, destroy target land.

When Bearer of the Heavens dies, destroy all permanents at the beginning of the next end step.

{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.)

{T}: Destroy target land unless its controller has Dwarven Driller deal 2 damage to them.

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

Whenever Etali, Primal Storm attacks, exile the top card of each player's library, then you may cast any number of spells from among those cards without paying their mana costs.

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

Flying, trample Whenever Hellkite Tyrant deals combat damage to a player, gain control of all artifacts that player controls. At the beginning of your upkeep, if you control twenty or more artifacts, you win the game.

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

When you cast this spell, draw four cards. Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents.) When Kozilek, Butcher of Truth is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.

Nonbasic lands are Mountains.

{1}{R}, {T}, Sacrifice Magus of the Wheel: Each player discards their hand, then draws seven cards.

{1}{R}, {T}: Put a mine counter on target land. Whenever a land with a mine counter on it becomes tapped, destroy it. When Mine Layer leaves the battlefield, remove all mine counters from all lands.

Trample Whenever Neheb, Dreadhorde Champion deals combat damage to a player or planeswalker, you may discard any number of cards. If you do, draw that many cards and add that much {R}. Until end of turn, you don't lose this mana as steps and phases end.

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.

{X}{X}{R}, {T}, Sacrifice Orcish Settlers: Destroy X target lands.

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.

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.

Nonbasic lands are Mountains.

When Blood Sun enters the battlefield, draw a card. All lands lose all abilities except mana abilities.

Cumulative upkeep—Add {R}. (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)

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

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

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

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

{R}: You may put a creature card from your hand onto the battlefield. That creature gains haste. Sacrifice the creature at the beginning of the next end step.

Destroy all Islands.

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.

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.

Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.) Copy target instant or sorcery spell. You may choose new targets for the copy.

Add {R}{R}{R}{R}{R}.

Indestructible {T}: Add {C}.

({T}: Add {R}.)

Myriad Landscape enters the battlefield tapped. {T}: Add {C}. {2}, {T}, Sacrifice Myriad Landscape: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.

{T}: Add {C}. {T}, Sacrifice Strip Mine: Destroy target 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}.

Each player separates all nontoken lands they control into two piles. For each player, one of their piles is chosen by one of their opponents of their choice. Destroy all lands in the chosen piles. Tap all lands in the other piles.

Exile all artifacts, creatures, and lands from the battlefield, all cards from all graveyards, and all cards from all hands. Cycling {5}{R}{R} ({5}{R}{R}, Discard this card: Draw a card.) When you cycle Decree of Annihilation, destroy all lands.

Destroy all creatures and lands.

Target player sacrifices a land. Threshold — Each player sacrifices all lands they control instead if seven or more cards are in your graveyard.

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.)

Destroy all artifacts, creatures, and lands. They can't be regenerated.

This spell can't be countered. Destroy all artifacts, creatures, and lands. They can't be regenerated.

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.)

Destroy target land. Add {R}{R}.

Each player sacrifices X lands.

Each player sacrifices a land for each card in your hand.

Each player sacrifices a land.

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.")

Destroy target land and all other lands with the same name as that land.

Suspend 4—{1}{R} (Rather than cast this card from your hand, pay {1}{R} and exile it with four time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost.) Each player discards their hand, then draws seven cards.

Each player discards their hand, then draws seven cards.