Activated abilities of creatures you control cost {X} less to activate, where X is Agatha of the Vile Cauldron's power. This effect can't reduce the mana in that cost to less than one mana.

{4}{R}{G}: Other creatures you control get +1/+1 and gain trample and haste until end of turn.

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.

Azorius Guildgate enters the battlefield tapped.

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

{T}: Add {C}.

{2}, {T}: Add X mana of any one color, where X is the number of other Gates you control.

Basalt Monolith doesn't untap during your untap step.

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

{3}: Untap Basalt Monolith.

{T}: Add {C}.

{2}, {T}: Target creature gets +X/+X until end of turn, where X is the number of Gates you control. Activate only as a sorcery.

Equipped creature has haste.

Whenever an ability of equipped creature is activated, if it isn't a mana ability, you may pay {1}. If you do, copy that ability. You may choose new targets for the copy.

Equip {2}

Activated abilities of creatures you control cost {2} less to activate. This effect can't reduce the mana in that cost to less than one mana.

{T}: The next time target creature adapts this turn, it adapts as though it had no +1/+1 counters on it.

Black Dragon Gate enters the battlefield tapped.

As Black Dragon Gate enters the battlefield, choose a color other than black.

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

{1}: Add {B}.

Boros Guildgate enters the battlefield tapped.

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

{3}{R}: Gain control of target creature an opponent controls until end of turn. Untap that creature. It gains haste until end of turn. Activate only as a sorcery.

Indestructible

{T}: Add {C}.

{5}, {T}: Add five mana in any combination of colors.

Discard a card: You may cast a creature spell from your graveyard this turn. Activate only once each turn.

Whenever a nontoken creature enters the battlefield under your control, if you didn't cast it from your hand, it gains haste until your next turn.

Search your library for up to two basic land cards and/or Gate cards, put them onto the battlefield tapped, then shuffle.

Citadel Gate enters the battlefield tapped.

As Citadel Gate enters the battlefield, choose a color other than white.

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

{X}, {T}: Search your library for a creature card with mana value X or less, reveal it, put it into your hand, then shuffle.

Cliffgate enters the battlefield tapped.

As Cliffgate enters the battlefield, choose a color other than red.

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

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

{U/R}{U/R}, {T}, Tap two untapped red creatures you control: Crackleburr deals 3 damage to any target.

{U/R}{U/R}, {Q}, Untap two tapped blue creatures you control: Return target creature to its owner's hand. ({Q} is the untap symbol.)

Cryptic Trilobite enters the battlefield with X +1/+1 counters on it.

Remove a +1/+1 counter from Cryptic Trilobite: Add {C}{C}. Spend this mana only to activate abilities.

{1}, {T}: Put a +1/+1 counter on Cryptic Trilobite.

{4}{B}{B}: Exile target creature and put a +1/+1 counter on Dark Impostor.

Dark Impostor has all activated abilities of all creature cards exiled with it.

Dimir Guildgate enters the battlefield tapped.

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

{1}{R/W}, {Q}: Attacking creatures get +1/+0 until end of turn. ({Q} is the untap symbol.)

Haste

You may activate abilities of other creatures you control as though those creatures had haste.

{T}: When you next activate an ability that isn't a mana ability this turn by spending four or more mana to activate it, copy that ability. You may choose new targets for the copy.

Search your library and graveyard for up to four creature cards with different names that each have mana value X or less and reveal them. An opponent chooses two of those cards. Shuffle the chosen cards into your library and put the rest onto the battlefield. Exile Ecological Appreciation.

Elvish Reclaimer gets +2/+2 as long as there are three or more land cards in your graveyard.

{2}, {T}, Sacrifice a land: Search your library for a land card, put it onto the battlefield tapped, then shuffle.

When Energy Refractor enters the battlefield, draw a card.

{2}: Add one mana of any color.

Flying

{1}{W}{B}, {T}: Destroy target creature or enchantment.

{2}{U}: Untap Ethersworn Adjudicator.

{T}: Add one mana of any color that a land an opponent controls could produce.

Flash

Flying

Whenever an opponent draws their second card each turn, you draw a card.

{3}{U}: Each player draws a card.

Farmstead Gleaner doesn't untap during your untap step.

{2}, {Q}: Put a +1/+1 counter on Farmstead Gleaner. ({Q} is the untap symbol.)

Gateway Plaza enters the battlefield tapped.

When Gateway Plaza enters the battlefield, sacrifice it unless you pay {1}.

{T}: Add one mana of any color.

{2}{G/U}, {Q}: Double the number of each kind of counter on target permanent. ({Q} is the untap symbol.)

Golgari Guildgate enters the battlefield tapped.

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

Gates you control enter the battlefield untapped.

{T}: Add {C}.

{T}: Add one mana of any color that a Gate you control could produce.

Whenever one or more creatures you control that entered the battlefield this turn deal combat damage to a player, create a 5/5 red Dragon Spirit creature token with flying.

{1}{R}: Creatures you control gain haste until end of turn.

{R}: Creatures you control gain haste until end of turn.

{3}{R}{R}: Create a 5/5 red Dragon Spirit creature token with flying. Activate only if you control an attacking modified creature. (Equipment, Auras you control, and counters are modifications.)

{2}{G}{U}: Draw a card. You may put a land card from your hand onto the battlefield.

Grim Monolith doesn't untap during your untap step.

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

{4}: Untap Grim Monolith.

Gruul Guildgate enters the battlefield tapped.

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

Wither (This deals damage to creatures in the form of -1/-1 counters.)

{2}{R}, {Q}: Hateflayer deals damage equal to its power to any target. ({Q} is the untap symbol.)

{1}: You may cast target creature card in a graveyard this turn. When you cast it this turn, Havengul Lich gains all activated abilities of that card until end of turn.

{T}: Add {C}.

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

{1}, {T}, Tap an untapped Gate you control: Create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

Whenever an ability of equipped creature is activated, if it isn't a mana ability, copy that ability. You may choose new targets for the copy.

Equip {3}

{T}: Untap another target permanent.

{T}: Untap two other target legendary creatures.

Izzet Guildgate enters the battlefield tapped.

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

{T}: Draw a card, then exile a card from your hand face down. You may look at that card for as long as it remains exiled. You may pay {4}{U}{U}. If you do, transform Jacob Hauken, Inspector.

At the beginning of your upkeep, exile the top card of your library face down. You may look at that card for as long as it remains exiled.

Once during each of your turns, you may play a land or cast a spell from among the cards exiled with this permanent without paying its mana cost.

{R}: All creatures gain trample and haste until end of turn.

{1}{G}: Put a +1/+1 counter on target creature.

{2}{W}: Target player gains 5 life.

{3}{U}: Target player draws a card.

{4}{B}: Put target creature card from a graveyard onto the battlefield under its owner's control.

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.

{T}: Untap another target permanent.

Flying

{1}{U}, {Q}: Target opponent exiles the top card of their library. Until end of turn, you may play that card. ({Q} is the untap symbol.)

Leech Bonder enters the battlefield with two -1/-1 counters on it.

{U}, {Q}: Move a counter from target creature onto a second target creature. ({Q} is the untap symbol.)

If Leyline of Abundance is in your opening hand, you may begin the game with it on the battlefield.

Whenever you tap a creature for mana, add an additional {G}.

{6}{G}{G}: Put a +1/+1 counter on each creature you control.

Manor Gate enters the battlefield tapped.

As Manor Gate enters the battlefield, choose a color other than green.

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

Double strike

Master Tactician -- Whenever one or more tokens enter the battlefield under your control, draw a card.

Chapter Master -- {6}: Create two 2/2 white Astartes Warrior creature tokens with vigilance.

Maze's End enters the battlefield tapped.

{T}: Add {C}.

{3}, {T}, Return Maze's End to its owner's hand: Search your library for a Gate card, put it onto the battlefield, then shuffle. If you control ten or more Gates with different names, you win the game.

{1}{U/B}, {Q}: Target creature gets -2/-0 until end of turn. ({Q} is the untap symbol.)

Whenever a source you control deals damage to another player, put that many theft counters on Night Dealings.

{2}{B}{B}, Remove X theft counters from Night Dealings: Search your library for a nonland card with mana value X, reveal it, put it into your hand, then shuffle.

Search your library for a basic land card or Gate card, reveal it, put it into your hand, then shuffle.

{1}{W}{W}, {Q}: Return target creature card with mana value 3 or less from your graveyard to the battlefield. ({Q} is the untap symbol.)

{1}{R}, {T}: Create a token that's a copy of another target creature you control. It gains haste. Sacrifice it at the beginning of the next end step. Activate only as a sorcery.

{6}{R}{R}{R}, {T}: Create five tokens that are copies of another target creature you control. They gain haste. Sacrifice them at the beginning of the next end step. Activate only as a sorcery.

Orzhov Guildgate enters the battlefield tapped.

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

Path of Ancestry enters the battlefield tapped.

{T}: Add one mana of any color in your commander's color identity. When that mana is spent to cast a creature spell that shares a creature type with your commander, scry 1. (Look at the top card of your library. You may put that card on the bottom.)

{1}{W}, {Q}: Create a 1/1 white Kithkin Soldier creature token. ({Q} is the untap symbol.)

Flying

{2}, {Q}: Add one mana of any color. ({Q} is the untap symbol.)

{X}{X}{B}: Destroy target nonblack creature with mana value X.

When Plaza of Harmony enters the battlefield, if you control two or more Gates, you gain 3 life.

{T}: Add {C}.

{T}: Add one mana of any type that a Gate you control could produce.

{T}: Add {C}.

{T}: Add one mana of any color. Spend this mana only to cast a legendary spell.

{T}: Add one mana of any color among legendary permanents you control.

{3}, {T}, Exile Plaza of Heroes: Target legendary creature gains hexproof and indestructible until end of turn.

{2}: Add one mana of any color.

{3}{W}{B}: Exile target creature. Then if there are three or more cards exiled with Profane Procession, transform it.

(Transforms from Profane Procession.)

{T}: Add one mana of any color.

{2}{W}{B}, {T}: Put a creature card exiled with this permanent onto the battlefield under your control.

{W/U}, {Q}: Look at the top card of your library. You may exile that card. ({Q} is the untap symbol.)

Rakdos Guildgate enters the battlefield tapped.

{T}: Add {B} or {R}.

When Ranger-Captain of Eos enters the battlefield, 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 Ranger-Captain of Eos: Your opponents can't cast noncreature spells this turn.

{T}: Add one mana of any type that a land you control could produce.

{2}{W}, {Q}: Safehold Sentry gets +0/+2 until end of turn. ({Q} is the untap symbol.)

Flash

Double strike, vigilance, haste

Other creatures you control have haste.

{W}, {T}: Untap another target creature.

Sea Gate enters the battlefield tapped.

As Sea Gate enters the battlefield, choose a color other than blue.

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

Selesnya Guildgate enters the battlefield tapped.

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

Flying

{1}{W/U}, {Q}: Tap target creature. ({Q} is the untap symbol.)

Simic Guildgate enters the battlefield tapped.

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

{T}: Add {G}.

{1}: Add {R} or {W}.

Deathtouch

{3}{B}{B}: Return up to three target creature cards from your graveyard to your hand.

{3}{B}{B}, Exile Soul of Innistrad from your graveyard: Return up to three target creature cards from your graveyard to your hand.

Trample

{5}: Permanents you control gain indestructible until end of turn.

{5}, Exile Soul of New Phyrexia from your graveyard: Permanents you control gain indestructible until end of turn.

First strike

{3}{R}{R}: Soul of Shandalar deals 3 damage to target player or planeswalker and 3 damage to up to one target creature that player or that planeswalker's controller controls.

{3}{R}{R}, Exile Soul of Shandalar from your graveyard: Soul of Shandalar deals 3 damage to target player or planeswalker and 3 damage to up to one target creature that player or that planeswalker's controller controls.

Flash (You may cast this spell any time you could cast an instant.)

Flying

{3}{U}: Draw a card.

Each creature you control has "{T}: Add one mana of any of this creature's colors. Spend this mana only to activate an ability of a creature. Activate only if this creature has another activated ability."

{W}{U}{B}{R}{G}, {T}: Mill five cards. Put all creature cards with activated abilities that aren't mana abilities from among the milled cards into your hand.

Haste

{1}, {T}: Copy target activated or triggered ability you control from another legendary source that's not a commander. You may choose new targets for the copy. (Mana abilities can't be targeted.)

You may activate abilities of creatures you control as though those creatures had haste.

{1}, {T}: Untap target creature.

You have no maximum hand size.

At the beginning of your upkeep, if you have exactly thirteen cards in your hand, you win the game.

{3}{U}: Draw a card.

You may activate abilities of creatures you control as though those creatures had haste.

+1: Untap up to one target creature.

-2: Mill three cards, then you may return a creature card with mana value 2 or less from your graveyard to the battlefield.

Equipped creature has "{3}, {Q}: This creature gets +2/+2 until end of turn." ({Q} is the untap symbol.)

Equip {0}

Vivid Crag enters the battlefield tapped with two charge counters on it.

{T}: Add {R}.

{T}, Remove a charge counter from Vivid Crag: Add one mana of any color.

Vivid Creek enters the battlefield tapped with two charge counters on it.

{T}: Add {U}.

{T}, Remove a charge counter from Vivid Creek: Add one mana of any color.

Vivid Grove enters the battlefield tapped with two charge counters on it.

{T}: Add {G}.

{T}, Remove a charge counter from Vivid Grove: Add one mana of any color.

Vivid Marsh enters the battlefield tapped with two charge counters on it.

{T}: Add {B}.

{T}, Remove a charge counter from Vivid Marsh: Add one mana of any color.

Vivid Meadow enters the battlefield tapped with two charge counters on it.

{T}: Add {W}.

{T}, Remove a charge counter from Vivid Meadow: Add one mana of any color.

When Volo enters the battlefield, create Volo's Journal, a legendary colorless artifact token with hexproof and "Whenever you cast a creature spell, note one of its creature types that hasn't been noted for this artifact."

{2}, {T}: Draw a card for each creature type noted for target permanent you control named Volo's Journal.

Choose a Background

{2}{G}, {T}, Put a verse counter on Yisan, the Wanderer Bard: Search your library for a creature card with mana value equal to the number of verse counters on Yisan, put it onto the battlefield, then shuffle.

{1}, {T}: You may put a land card from your hand onto the battlefield tapped.

{4}, {T}: Draw a card. If you control eight or more lands, draw two cards instead.