When Agent of Treachery enters the battlefield, gain control of target permanent.

At the beginning of your end step, if you control three or more permanents you don't own, draw three cards.

+1: Each opponent discards a card and loses 2 life.

-3: Gain control of target creature until end of turn. Untap it. It gains haste until end of turn. Sacrifice it at the beginning of the next end step if it has mana value 3 or less.

-8: Each opponent loses life equal to the number of cards in their graveyard.

Enchant creature card in a graveyard

When Animate Dead enters the battlefield, if it's on the battlefield, it loses "enchant creature card in a graveyard" and gains "enchant creature put onto the battlefield with Animate Dead." Return enchanted creature card to the battlefield under your control and attach Animate Dead to it. When Animate Dead leaves the battlefield, that creature's controller sacrifices it.

Enchanted creature gets -1/-0.

When Archaeomancer enters the battlefield, return target instant or sorcery card from your graveyard to your hand.

Flying

When Augury Owl enters the battlefield, scry 3. (Look at the top three cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)

Flying, deathtouch

When Baleful Strix enters the battlefield, draw a card.

Destroy target artifact, creature, or planeswalker.

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

As Blood Crypt enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

At the beginning of each end step, if an opponent lost 2 or more life this turn, you may put a quest counter on Bloodchief Ascension. (Damage causes loss of life.)

Whenever a card is put into an opponent's graveyard from anywhere, if Bloodchief Ascension has three or more quest counters on it, you may have that player lose 2 life. If you do, you gain 2 life.

When Burglar Rat enters the battlefield, each opponent discards a card.

{2}, {T}: Add {B} for each Swamp you control.

Buyback {3} (You may pay an additional {3} as you cast this spell. If you do, put this card into your hand as it resolves.)

Return target permanent to its owner's hand.

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.

You may have Clever Impersonator enter the battlefield as a copy of any nonland permanent on the battlefield.

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

At the beginning of your end step, you may exile target creature you control, then return that card to the battlefield under your control.

Counter target spell.

Crumbling Necropolis enters the battlefield tapped.

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

Return target nonland permanent you don't control to its owner's hand.

Overload {6}{U} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")

Soulbond (You may pair this creature with another unpaired creature when either enters the battlefield. They remain paired for as long as you control both of them.)

As long as Deadeye Navigator is paired with another creature, each of those creatures has "{1}{U}: Exile this creature, then return it to the battlefield under your control."

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

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

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

First strike

When Dire Fleet Daredevil enters the battlefield, exile target instant or sorcery card from an opponent's graveyard. You may cast it this turn, and mana of any type can be spent to cast that spell. If that spell would be put into a graveyard, exile it instead.

Dragonskull Summit enters the battlefield tapped unless you control a Swamp or a Mountain.

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

Drowned Catacomb enters the battlefield tapped unless you control an Island or a Swamp.

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

Flash

When Dualcaster Mage enters the battlefield, copy target instant or sorcery spell. You may choose new targets for the copy.

When Dusk Legion Zealot enters the battlefield, you draw a card and you lose 1 life.

Return all creatures to their owners' hands.

{2}, {T}, Sacrifice Expedition Map: Search your library for a land card, reveal it, put it into your hand, then shuffle.

Flying

When Fell Specter enters the battlefield, target opponent discards a card.

Whenever an opponent discards a card, that player loses 2 life.

At the beginning of each player's end step, that player draws a card. If the player is your opponent and has four or more cards in hand, Fevered Visions deals 2 damage to that player.

Whenever a nontoken creature enters the battlefield under your control, you may pay {R}. If you do, create a token that's a copy of that creature. That token gains haste. Exile it at the beginning of the next end step.

Exile two target artifacts, creatures, and/or lands you control, then return those cards to the battlefield under your control.

Exile up to two target creatures you control, then return those cards to the battlefield under their owner's control.

Draw a card.

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

{U}, {T}: Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.

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

You may cast spells as though they had flash.

Whenever an opponent discards a card, that player loses 2 life.

Flying

When Liliana's Specter enters the battlefield, each opponent discards a card.

Lifelink

Whenever another nontoken creature you control dies, exile Liliana, Heretical Healer, then return her to the battlefield transformed under her owner's control. If you do, create a 2/2 black Zombie creature token.

+2: Each player discards a card.

-X: Return target nonlegendary creature card with mana value X from your graveyard to the battlefield.

-8: You get an emblem with "Whenever a creature dies, return it to the battlefield under your control at the beginning of the next end step."

Luxury Suite enters the battlefield tapped unless you have two or more opponents.

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

Whenever an opponent discards a card, Megrim deals 2 damage to that player.

You may cast target instant or sorcery card from an opponent's graveyard without paying its mana cost.

Flash

When Merfolk Trickster enters the battlefield, tap target creature an opponent controls. It loses all abilities until end of turn.

Morphic Pool enters the battlefield tapped unless you have two or more opponents.

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

Flying

When Mulldrifter enters the battlefield, draw two cards.

Evoke {2}{U} (You may cast this spell for its evoke cost. If you do, it's sacrificed when it enters the battlefield.)

+2: Target opponent exiles cards from the top of their library until they exile a nonland card. Until end of turn, you may cast that card without paying its mana cost.

+1: Each opponent exiles two cards from their hand.

-4: Nicol Bolas, God-Pharaoh deals 7 damage to target opponent, creature an opponent controls, or planeswalker an opponent controls.

-12: Exile each nonland permanent your opponents control.

Flying

When Nicol Bolas, the Ravager enters the battlefield, each opponent discards a card.

{4}{U}{B}{R}: Exile Nicol Bolas, the Ravager, then return him to the battlefield transformed under his owner's control. Activate only as a sorcery.

+2: Draw two cards.

-3: Nicol Bolas, the Arisen deals 10 damage to target creature or planeswalker.

-4: Put target creature or planeswalker card from a graveyard onto the battlefield under your control.

-12: Exile all but the bottom card of target player's library.

At the beginning of each player's upkeep, return to its owner's hand each creature that player controls with power greater than the number of cards in their hand.

Flash

If an opponent would draw a card except the first one they draw in each of their draw steps, instead that player skips that draw and you draw a card.

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

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

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

Flying

When Pilgrim's Eye enters the battlefield, you may search your library for a basic land card, reveal it, put it into your hand, then shuffle.

Whenever an opponent discards a card, that player loses 2 life.

Raid -- At the beginning of your end step, if you attacked this turn, target opponent discards a card.

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

When Ravenous Chupacabra enters the battlefield, destroy target creature an opponent controls.

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

When Salvager of Secrets enters the battlefield, return target instant or sorcery card from your graveyard to your hand.

{T}: Add {C}.

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

At the beginning of each opponent's upkeep, if that player has one or fewer cards in hand, they lose 3 life.

At the beginning of each opponent's upkeep, Skullcage deals 2 damage to that player unless they have exactly three or exactly four cards in hand.

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

When Solemn Simulacrum enters the battlefield, you may search your library for a basic land card, put that card onto the battlefield tapped, then shuffle.

When Solemn Simulacrum dies, you may draw a card.

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

As Steam Vents enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Sulfur Falls enters the battlefield tapped unless you control an Island or a Mountain.

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

Repeat the following process X times. Each opponent loses 3 life unless that player sacrifices a nonland permanent or discards a card.

Each land is a Swamp in addition to its other land types.

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.")

Flash

When Venser, Shaper Savant enters the battlefield, return target spell or permanent to its owner's hand.

Whenever an opponent discards a creature card, create a 2/2 black Zombie creature token.

Whenever an opponent discards a land card, add {B}{B}.

Whenever an opponent discards a noncreature, nonland card, draw a card.

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

As Watery Grave enters the battlefield, you may pay 2 life. If you don't, it enters the battlefield tapped.

Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.

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.)

Each player discards their hand, then draws cards equal to the greatest number of cards a player discarded this way.

{1}: The next time you would draw a card this turn, each opponent discards a card instead.

Flying, trample

When Worldgorger Dragon enters the battlefield, exile all other permanents you control.

When Worldgorger Dragon leaves the battlefield, return the exiled cards to the battlefield under their owners' control.