This land enters tapped unless you control a Mountain. {T}: Add {R}. {R}, {T}, Exert this land: Add {R}{R}. If that mana is spent on a creature spell, it gains haste until end of turn. (An exerted permanent won't untap during your next untap step.)

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

As this land enters, you may reveal an Elemental card from your hand. If you don't, this land enters tapped. {T}: Add {R}. {R}, {T}: Target creature gains haste until end of turn.

As this land enters, you may reveal a Swamp or Mountain card from your hand. If you don't, this land enters tapped. {T}: Add {B} or {R}.

{T}: Add {C}. {B/R}, {T}: Add {B}{B}, {B}{R}, or {R}{R}.

{T}: Add {C}. {R}, {T}: Target creature gains haste until end of turn. {3}{R}{R}, {T}: If you both own and control this land and a creature named Hanweir Garrison, exile them, then meld them into Hanweir, the Writhing Township.

This land enters tapped unless you control two or more other lands. {T}: Add {B} or {R}.

({T}: Add {R}.)

({T}: Add {B} or {R}.) This land enters tapped unless you control two or more basic lands.

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

Whenever an opponent casts a creature spell, that player loses 2 life unless they pay {2}.

{T}: Add {C}. {T}: Target nonland permanent becomes an artifact in addition to its other types until end of turn.

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

Whenever an opponent loses life, that player mills that many cards. (Damage causes loss of life.)

{1}, {T}: Add {B}{R}.

{1}: Look at the top three cards of your library, then put them back in any order. {T}: Draw a card, then put this artifact on top of its owner's library.

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

As this artifact enters, choose two colors. Whenever you cast a spell, if it's at least one of the chosen colors, you gain 1 life for each of the chosen colors it is.

{T}: Add {C}. {T}: Add {B} or {R}. This artifact deals 1 damage to you.

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

Boltwave deals 3 damage to each opponent.

Chain Reaction deals X damage to each creature, where X is the number of creatures on the battlefield.

Destroy all creatures. Each player loses life equal to the number of creatures they controlled that were destroyed this way.

Surveil 2, then draw two cards. You lose 2 life. (To surveil 2, look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.)

Goad all creatures you don't control. (Until your next turn, those creatures attack each combat if able and attack a player other than you if able.)

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 target creature or enchantment an opponent controls. You lose life equal to that permanent's mana value.

For each creature, its controller sacrifices it unless they pay X life.

Destroy each artifact with mana value X or less.

Choose one — • Gain control of all creatures with power 4 or greater until end of turn. Untap those creatures. They gain haste until end of turn. • Gain control of all creatures with power 3 or less until end of turn. Untap those creatures. They gain haste until end of turn.

Each player may bid life. You start the bidding with a bid of any number. In turn order, each player may top the high bid. The bidding ends if the high bid stands. The high bidder loses life equal to the high bid and draws four cards.

Rolling Earthquake deals X damage to each creature without horsemanship and each player.

For each nonland permanent, choose a player at random. Then each player gains control of each permanent for which they were chosen. Untap those permanents.

Target player draws two cards and loses 2 life.

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

When Kardur enters, until your next turn, creatures your opponents control attack each combat if able and attack a player other than you if able. Whenever an attacking creature dies, each opponent loses 1 life and you gain 1 life.

Whenever an opponent draws a card, if you control a red permanent, you may have this creature deal 1 damage to that player.

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.

Menace (This creature can't be blocked except by two or more creatures.) Lieutenant — At the beginning of combat on your turn, if you control your commander, each opponent loses 3 life.

Whenever a player sacrifices a permanent, this creature deals 1 damage to any target.

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

Menace Ward—Pay 3 life. (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays 3 life.) Magecraft — Whenever you cast or copy an instant or sorcery spell, create a 1/1 black and green Pest creature token with "When this token dies, you gain 1 life."

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.)

Menace At the beginning of your upkeep, each player draws a card and loses 1 life.

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.

When this enchantment enters, draw a card. All lands lose all abilities except mana abilities.

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) If a source you control would deal damage to a permanent or player, it deals triple that damage instead.

Players can't gain life. At the beginning of each player's upkeep, that player loses half their life, rounded up.

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

Whenever an opponent casts a spell, that player loses 5 life unless they discard a card.

At the beginning of your upkeep, you draw a card and you lose 1 life.

Whenever a land an opponent controls enters, that player loses 2 life and you gain 2 life.

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

Whenever a creature is dealt damage, this enchantment deals that much damage to that creature's controller.

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.

Whenever an opponent draws a card, this enchantment deals 1 damage to that player.

Creatures played by your opponents enter tapped.

Destroy target artifact, creature, or planeswalker.

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.

Add {B}{B}{B}.

Destroy target creature. You lose 2 life.

You and target spell's controller bid life. You start the bidding with a bid of 1. In turn order, each player may top the high bid. The bidding ends if the high bid stands. The high bidder loses life equal to the high bid. If you win the bidding, counter that spell.

Choose one — • Exile target player's graveyard. • Destroy target artifact. • Each creature deals 1 damage to its controller.

Target opponent may have Risk Factor deal 4 damage to them. If that player doesn't, you draw three cards. Jump-start (You may cast this card from your graveyard by discarding a card in addition to paying its other costs. Then exile this card.)

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Until end of turn, creatures target player controls lose all abilities and have base power and toughness 0/2.

Tempting offer — Choose target instant or sorcery spell. Each opponent may copy that spell and may choose new targets for the copy they control. You copy that spell once plus an additional time for each opponent who copied the spell this way. You may choose new targets for the copies you control.

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

Destroy target creature. If you control an artifact, Unlicensed Disintegration deals 3 damage to that creature's controller.