This artifact enters tapped. As this artifact enters, 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 this artifact: Draw a card.

Indestructible (Effects that say "destroy" don't destroy this artifact.) {T}: Add one mana of any color.

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

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

+1: Untap target Mountain. It becomes a 4/4 red Elemental creature until end of turn. It's still a land. −2: Add {R} for each Mountain you control. −5: You get an emblem with "Mountains you control have '{T}: This land deals 1 damage to any target.'"

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

Afflict 3 (Whenever this creature becomes blocked, defending player loses 3 life.) At the beginning of each of your postcombat main phases, add {R} for each 1 life your opponents have lost this turn.

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

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

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

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

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

Whenever you cast a noncreature spell, this creature deals 1 damage to each opponent.

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

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.

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

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

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

Indestructible {T}: Add {C}.

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

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

({T}: Add {R}.)

This land enters tapped. {T}: Add {C}. {2}, {T}, Sacrifice this land: 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 this land: Destroy target land.

At the beginning of your upkeep, return an instant or sorcery card at random from your graveyard to your hand. Whenever you cast an instant or sorcery spell, this creature gets +4/+0 until end of turn.

Haste {T}: Create a token that's a copy of target nonlegendary creature you control, except it has haste. Sacrifice it at the beginning of the next end step.

When this creature dies, each player sacrifices a land of their choice.

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, you may cast it without paying its mana cost. It has haste.) Whenever a time counter is removed from this card while it's exiled, destroy target nonbasic land.

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

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

Destroy target artifact or land. Recover {R}{R} (When a creature is put into your graveyard from the battlefield, you may pay {R}{R}. If you do, return this card from your graveyard to your hand. Otherwise, exile this card.)

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

When this creature enters, each player sacrifices all lands they control except for three.

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

Destroy target land. If that land was nonbasic, Molten Rain deals 2 damage to the land's controller.

Destroy target land, then Roiling Terrain deals damage to that land's controller equal to the number of land cards in that player's graveyard.

Each player sacrifices X lands of their choice.

Each player sacrifices a land of their choice.

Destroy X target artifacts.

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.

{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.

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.

Imprint — When this creature enters, exile target land. Whenever a land an opponent controls with the same name as the exiled card enters, this creature deals 2 damage to that player.

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

Destroy target artifact or land. It can't be regenerated.

Destroy all nonbasic lands.

Seismic Strike deals damage to target creature equal to the number of Mountains you control.

Destroy all artifacts. They can't be regenerated.

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. This creature deals damage to that artifact's controller equal to the artifact's mana value.

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

{T}: Add {R}.

Equipped creature has haste and shroud. (It can't be the target of spells or abilities.) Equip {0}

Nonbasic lands are Mountains.

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

Your opponents can't search libraries. If an opponent would begin an extra turn, that player skips that turn instead.

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