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.

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

When this artifact enters, exile target card from a graveyard. {1}, {T}, Exile this artifact: Exile all cards from all graveyards, then draw a card.

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

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

If an artifact or creature entering causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.

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

If a creature an opponent controls would die, exile it instead. {2}, {T}, Sacrifice Stone of Erech: Exile target player's graveyard. Draw a card.

{T}: Add {C}{C}. {2}, {T}, Sacrifice this artifact: Exile any number of target players' graveyards. Draw a card.

You have no maximum hand size. {T}: Add {C}.

Flash Ward {2} Probing Telepathy — Whenever a creature entering under an opponent's control causes a triggered ability of that creature to trigger, you may copy that ability. You may choose new targets for the copy.

Arvinox isn't a creature unless you control three or more permanents you don't own. At the beginning of your end step, exile the bottom card of each opponent's library face down. For as long as those cards remain exiled, you may look at them, you may cast permanent spells from among them, and you may spend mana as though it were mana of any color to cast those spells.

Lifelink, haste

Horrors you control have menace. Whenever a Horror you control deals combat damage to a player, that player mills that many cards. At the beginning of your end step, choose target artifact or creature card in an opponent's graveyard that was put there from their library this turn. Put it onto the battlefield under your control.

Whenever a Swamp you control enters, choose one — • You draw a card and you lose 1 life. • This creature deals 2 damage to any target and you gain 2 life.

Menace Whenever this creature attacks a player, exile all cards from that player's hand, then they draw that many cards. You may play lands and cast spells from among the exiled cards for as long as they remain exiled. If you cast a spell this way, you may spend mana as though it were mana of any color to cast it.

Commanders you control have menace and deathtouch. Partner (You can have two commanders if both have partner.)

Whenever a creature you control becomes blocked, you may return it to its owner's hand. Whenever one or more creatures you control deal combat damage to a player, draw a card.

This creature enters with your choice of two different counters on it from among menace, deathtouch, and lifelink.

When this creature enters, scry 1. {2}{B}: Return this card from your graveyard to the battlefield tapped. Activate only if you control a legendary creature.

Flash This spell can't be countered. Whenever you cast a spell, choose up to one — • Return target spell you don't control to its owner's hand. • Return target nonland permanent to its owner's hand.

When this creature enters, target opponent reveals their hand and you choose a nonland card from it. Exile that card. When this creature leaves the battlefield, return the exiled card to its owner's hand.

Dominate Monster — When this creature enters, gain control of target creature for as long as you control this creature.

When this creature dies, create a Food token. (It's an artifact with "{2}, {T}, Sacrifice this token: You gain 3 life.")

If a creature an opponent controls would die, exile it instead. {1}: This creature gets +1/+1 until end of turn.

Whenever this creature attacks, defending player mills ten cards.

Flying Whenever another nontoken creature you control dies, you may exile it. If you do, create a token that's a copy of that creature, except it's 1/1 and it's a Nightmare in addition to its other types.

When you cast this spell, target opponent exiles the top four cards of their library, then you may put any number of land cards that player owns from exile onto the battlefield under your control.

When this creature enters, destroy target creature an opponent controls.

Devoid (This card has no color.) Whenever a land an opponent controls enters, that player exiles the top two cards of their library and you draw two cards.

Whenever this creature enters or attacks, put a slime counter on up to one other target creature. Non-Horror creatures with slime counters on them lose all abilities and have base power and toughness 2/2.

{U/P}: Change a target of target spell or ability to this creature. ({U/P} can be paid with either {U} or 2 life.)

Uchuulon's power is equal to the number of Crabs, Oozes, and/or Horrors you control. Horrific Symbiosis — At the beginning of your end step, exile up to one target creature card from an opponent's graveyard. If you do, create a token that's a copy of this creature.

Skulk (This creature can't be blocked by creatures with greater power.) Whenever this creature deals combat damage to a player, you may draw a card. If you do, discard a card. Whenever you discard a creature card, you may pay {2}. If you do, create a 3/2 colorless Eldrazi Horror creature token.

When this enchantment enters, you become the monarch. At the beginning of your upkeep, exile the top card of target opponent's library. You may play that card for as long as it remains exiled, and mana of any type can be spent to cast it. If you're the monarch, until end of turn, you may cast a spell from among cards exiled with this enchantment without paying its mana cost.

At the beginning of your upkeep, target opponent may exile a card from their graveyard. If that player doesn't, you may draw a card.

If this card is in your opening hand, you may begin the game with it on the battlefield. If a card would be put into an opponent's graveyard from anywhere, exile it instead.

(Gain the next level as a sorcery to add its ability.) Whenever a creature you control deals combat damage to a player, exile the top card of that player's library face down. You may look at it for as long as it remains exiled. {1}{U}{B}: Level 2 Creatures you control have menace. {2}{U}{B}: Level 3 You may play cards exiled with this Class, and you may spend mana as though it were mana of any color to cast those spells.

You may pay {1}{B} rather than pay this spell's mana cost. If the {1}{B} cost was paid, an opponent draws a card. Exile target creature or planeswalker.

Add {B}{B}{B}.

Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.

Put target creature card from an opponent's graveyard onto the battlefield tapped under your control, then exile that player's graveyard.

Target creature gains deathtouch and indestructible until end of turn. (Damage and effects that say "destroy" don't destroy it.)

Exile target creature. Its controller manifests the top card of their library. (That player puts the top card of their library onto the battlefield face down as a 2/2 creature. If it's a creature card, it can be turned face up any time for its mana cost.)

Exile target artifact or creature. Its controller creates a 4/4 blue and red Elemental creature token.

Create an X/X black Horror creature token, where X is the number of creatures that died this turn.

This land enters tapped. When this land enters, exile target player's graveyard. {T}: Add {B}.

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

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

This land enters tapped unless you control an Island or a Swamp. {T}: Add {U} or {B}.

({T}: Add {U}.)

{T}: Add {C}. {1}{U}{B}, {T}: Target player mills three cards.

This land enters 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.)

{T}: Add {C}. {4}, {T}: Target creature can't be blocked this turn.

{T}: Add {C}. {2}, {T}, Sacrifice a Desert: Exile all graveyards.

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

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

({T}: Add {B}.)

+1: Create a 2/3 blue and black Nightmare creature token with "Whenever this token attacks or blocks, each opponent exiles the top two cards of their library." −3: Return target nonland permanent to its owner's hand, then that player exiles a card from their hand. −7: You may cast up to three spells from among face-up cards your opponents own from exile without paying their mana costs.

Create a 1/1 blue and black Horror creature token with flying. Cipher (Then you may exile this spell card encoded on a creature you control. Whenever that creature deals combat damage to a player, its controller may cast a copy of the encoded card without paying its mana cost.)

Exile X target creatures. For each creature exiled this way, its controller creates a 2/2 green Boar creature token.

Target player loses X life and you gain X life, where X is the greatest power among creatures you control.

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

Each opponent mills fourteen cards. Cycling {1}{U} ({1}{U}, Discard this card: Draw a card.) When you cycle this card, each opponent mills four cards.

Kicker {3}{U} Each opponent mills eight cards. If this spell was kicked, instead each opponent mills half their library, rounded up.

Choose target creature you control. Destroy all creatures with power less than that creature's power.

As an additional cost to cast this spell, sacrifice a creature. Rite of Consumption deals damage equal to the sacrificed creature's power to target player or planeswalker. You gain life equal to the damage dealt this way.