{T}, Pay 1 life, Sacrifice this land: Search your library for a Mountain or Plains card, put it onto the battlefield, then shuffle.

({T}: Add {B} or {G}.)

{T}: Add {G}. Channel — {1}{G}, Discard this card: Destroy target artifact, enchantment, or nonbasic land an opponent controls. That player may search their library for a land card with a basic land type, put it onto the battlefield, then shuffle. This ability costs {1} less to activate for each legendary creature you control.

Whenever this land becomes tapped, it deals 1 damage to you. {T}: Add one mana of any color.

{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.

{T}, Pay 1 life, Sacrifice this land: Search your library for a Plains or Island card, put it onto the battlefield, then shuffle.

{T}: Add one mana of any color. Whenever you tap this land for mana, target opponent creates a 1/1 colorless Spirit creature token.

{T}: Add {G} for each creature you control.

If this card is in your opening hand and you're not the starting player, you may begin the game with Gemstone Caverns on the battlefield with a luck counter on it. If you do, exile a card from your hand. {T}: Add {C}. If Gemstone Caverns has a luck counter on it, instead add one mana of any color.

{T}, Pay 1 life: Add one mana of any color.

{T}, Pay 1 life, Sacrifice this land: Search your library for a Plains or Swamp card, put it onto the battlefield, then shuffle.

{T}: Add {U}. {U}, {T}: Untap target legendary permanent.

{T}, Pay 1 life, Sacrifice this land: Search your library for a Forest or Island card, put it onto the battlefield, then shuffle.

{T}, Pay 1 life: Add {B} or {R}. {1}{B}{R}, {T}: Mount Doom deals 1 damage to each opponent. {5}{B}{R}, {T}, Sacrifice Mount Doom and a legendary artifact: Choose up to two creatures, then destroy the rest. Activate only as a sorcery.

{T}: Add {U}. Channel — {3}{U}, Discard this card: Return target artifact, creature, enchantment, or planeswalker to its owner's hand. This ability costs {1} less to activate for each legendary creature you control.

({T}: Add {R} or {W}.)

{T}, Pay 1 life, Sacrifice this land: Search your library for an Island or Swamp card, put it onto the battlefield, then shuffle.

({T}: Add {G} or {W}.)

{T}, Pay 1 life, Sacrifice this land: Search your library for an Island or Mountain card, put it onto the battlefield, then shuffle.

({T}: Add {W} or {B}.)

({T}: Add {R} or {G}.)

({T}: Add {G} or {U}.)

({T}: Add {W} or {U}.)

({T}: Add {U} or {B}.)

{T}, Pay 1 life, Sacrifice this land: Search your library for a Swamp or Forest card, put it onto the battlefield, then shuffle.

({T}: Add {U} or {R}.)

{T}, Pay 1 life, Sacrifice this land: Search your library for a Forest or Plains card, put it onto the battlefield, then shuffle.

You may spend mana as though it were mana of any color to activate abilities of creatures you control. Creatures you control with +1/+1 counters on them have all activated abilities of all creature cards exiled with Agatha's Soul Cauldron. {T}: Exile target card from a graveyard. When a creature card is exiled this way, put a +1/+1 counter on target creature you control.

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

Imprint — When this artifact enters, you may exile a nonartifact, nonland card from your hand. {T}: Add one mana of any of the exiled card's colors.

{T}, Sacrifice this artifact: Add three mana of any one color. Spend this mana only to cast your commander.

{T}, Sacrifice this artifact: Add one mana of any color.

At the beginning of your upkeep, flip a coin. If you lose the flip, this artifact deals 3 damage to you. {T}: Add {C}{C}.

{T}: Add one mana of any color among legendary creatures and planeswalkers you control.

If this artifact would enter, you may discard a land card instead. If you do, put this artifact onto the battlefield. If you don't, put it into its owner's graveyard. {T}: Add one mana of any color.

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

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

+1: Draw a card, then put a card from your hand on top of your library. −1: Exile another target permanent you own, then return it to the battlefield under your control. −6: Choose left or right. Each player gains control of all nonland permanents other than Aminatou controlled by the next player in the chosen direction. Aminatou, the Fateshifter can be your commander.

+2: Up to one target legendary creature gains vigilance, lifelink, and indestructible until your next turn. −3: Reveal the top four cards of your library. Put any number of legendary cards from among them into your hand and the rest into your graveyard. Create a Treasure token for each card put into your graveyard this way. −11: Gain control of all nonland permanents until end of turn. Untap them. They gain haste until end of turn. Dihada, Binder of Wills can be your commander.

When Minsc & Boo enters and at the beginning of your upkeep, you may create Boo, a legendary 1/1 red Hamster creature token with trample and haste. +1: Put three +1/+1 counters on up to one target creature with trample or haste. −2: Sacrifice a creature. When you do, Minsc & Boo deals X damage to any target, where X is that creature's power. If the sacrificed creature was a Hamster, draw X cards. Minsc & Boo, Timeless Heroes can be your commander.

Nicol Bolas has all loyalty abilities of all other planeswalkers on the battlefield. +1: You draw a card. Each opponent exiles a card from their hand or a permanent they control. −3: Destroy target creature or planeswalker. −8: Each opponent who doesn't control a legendary creature or planeswalker loses the game.

+1: Scry 1. Saheeli Rai deals 1 damage to each opponent. −2: Create a token that's a copy of target artifact or creature you control, except it's an artifact in addition to its other types. That token gains haste. Exile it at the beginning of the next end step. −7: Search your library for up to three artifact cards with different names, put them onto the battlefield, then shuffle.

Each opponent can cast spells only any time they could cast a sorcery. +1: Until your next turn, you may cast sorcery spells as though they had flash. −3: Return up to one target artifact, creature, or enchantment to its owner's hand. Draw a card.

Flash Whenever an opponent searches their library, you gain 1 life and draw a card.

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

{T}: For each color among permanents you control, add one mana of that color.

{T}: Exile target land card from a graveyard. Add one mana of any color. {B}, {T}: Exile target instant or sorcery card from a graveyard. Each opponent loses 2 life. {G}, {T}: Exile target creature card from a graveyard. You gain 2 life.

Flying When Derevi enters and whenever a creature you control deals combat damage to a player, you may tap or untap target permanent. {1}{G}{W}{U}: Put Derevi onto the battlefield from the command zone.

When this creature enters, create X Treasure tokens, where X is the number of artifacts and enchantments your opponents control. (Treasure tokens are artifacts with "{T}, Sacrifice this token: Add one mana of any color.")

{3}: Exile another target creature you control, then return it to the battlefield under its owner's control. Whenever another creature you control enters, you may pay {G/W}. If you do, put a +1/+1 counter on it. If it's a Unicorn, put two +1/+1 counters on it instead. ({G/W} can be paid with either {G} or {W}.)

Flash When Ertai Resurrected enters, choose up to one — • Counter target spell, activated ability, or triggered ability. Its controller draws a card. • Destroy another target creature or planeswalker. Its controller draws a card.

Whenever an opponent casts their first noncreature spell each turn, draw a card unless that player pays {X}, where X is this creature's power.

Vigilance This creature gets +1/+1 for each color among permanents you control. {T}: For each color among permanents you control, add one mana of that color.

When Honest Rutstein enters, return target creature card from your graveyard to your hand. Creature spells you cast cost {1} less to cast.

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) {T}: Add {B}, {R}, or {G}.

When Kalain enters, create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.") Other creatures you control enter with an additional +1/+1 counter on them for each mana from a Treasure spent to cast them.

Whenever you tap a nonland permanent for mana, add one mana of any type that permanent produced. {5}{G}{U}: Look at the top five cards of your library. You may put a non-Human creature card from among them onto the battlefield. Put the rest on the bottom of your library in a random order.

Your opponents can't cast spells during your turn. Whenever one or more creatures you control each with power greater than its base power deals combat damage to a player, draw a card.

Whenever a player casts their second spell each turn, you lose 1 life and create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

Exalted (Whenever a creature you control attacks alone, that creature gets +1/+1 until end of turn.) {T}: Add {G}, {W}, or {U}.

Flying Whenever another creature you control enters, you may discard a card. If you do, put a +1/+1 counter on that creature, it gains haste until end of turn, and it becomes a Vampire in addition to its other types.

({U/P} can be paid with either {U} or 2 life.) You may have this creature enter as a copy of any artifact or creature on the battlefield, except it's an artifact in addition to its other types.

Whenever Ragavan deals combat damage to a player, create a Treasure token and exile the top card of that player's library. Until end of turn, you may cast that card. Dash {1}{R} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.)

When this creature enters, you may search your library for a creature card with mana value 1 or less, reveal it, put it into your hand, then shuffle. Sacrifice this creature: Your opponents can't cast noncreature spells this turn.

You may have Sakashima the Impostor enter as a copy of any creature on the battlefield, except its name is Sakashima the Impostor, it's legendary in addition to its other types, and it has "{2}{U}{U}: Return Sakashima the Impostor to its owner's hand at the beginning of the next end step."

Whenever another creature enters, its controller may draw a card if its power is greater than each other creature's power. {G}, {T}: Add X mana in any combination of colors, where X is the greatest power among creatures you control.

Search your library for a card, put that card into your hand, then shuffle.

Search your library and/or graveyard for a creature card with mana value X or less and put it onto the battlefield. If you search your library this way, shuffle. If X is 10 or more, creatures you control get +X/+X and gain haste until end of turn.

Commander creatures you own get +3/+3 and have flying, deathtouch, "Ward—Pay 3 life," and "At the beginning of your upkeep, sacrifice a creature."

Cumulative upkeep {1} (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.) Whenever an opponent casts a noncreature spell, you may draw a card unless that player pays {4}.

When Oath of Teferi enters, exile another target permanent you control. Return it to the battlefield under its owner's control at the beginning of the next end step. You may activate the loyalty abilities of planeswalkers you control twice each turn rather than only once.

Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.

Whenever an opponent draws a card, that player may pay {2}. If the player doesn't, you create a Treasure token. (It's an artifact with "{T}, Sacrifice this token: Add one mana of any color.")

This spell can't be countered. Destroy target nonland permanent with mana value 3 or less.

If you control a commander, you may cast this spell without paying its mana cost. You may choose new targets for target spell or ability.

Search your library for a creature card, reveal that card, put it into your hand, then shuffle.

Search your library for an artifact or enchantment card, reveal it, then shuffle and put that card on top.

If you control a commander, you may cast this spell without paying its mana cost. Counter target noncreature spell.

As an additional cost to cast this spell, pay X life. Fire Covenant deals X damage divided as you choose among any number of target creatures.

Counter target instant or sorcery spell unless its controller pays {1}. Storm (When you cast this spell, copy it for each spell cast before it this turn. You may choose new targets for the copies.)

You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost. Counter target spell.

Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Untap target creature. Until end of turn, it gains hexproof, reach, and "Whenever this creature becomes tapped, it deals damage equal to its power to up to one target creature."

This spell can't be countered. (This includes by the ward ability.) Destroy target creature or planeswalker with mana value 3 or less.

({U/P} can be paid with either {U} or 2 life.) Counter target spell with mana value 1.

If an opponent cast three or more spells this turn, you may pay {0} rather than pay this spell's mana cost. Exile any number of target spells.

Counter target spell. At the beginning of your next upkeep, pay {3}{U}{U}. If you don't, you lose the game.

Your opponents can't cast spells this turn.

Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying.

Exile target creature. Its controller gains life equal to its power.

Search your library for a card, then shuffle and put that card on top. You lose 2 life.