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.

Sacrifice a creature: Target player mills cards equal to the sacrificed creature's power.

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

Sacrifice a creature: Add {C}{C}.

Menace

When Atris, Oracle of Half-Truths enters the battlefield, target opponent looks at the top three cards of your library and separates them into a face-down pile and a face-up pile. Put one pile into your hand and the other into your graveyard.

As an additional cost to cast this spell, sacrifice a creature.

Return a creature card from your graveyard to the battlefield, then return another creature card from your graveyard to your hand.

Bloodfell Caves enters the battlefield tapped.

When Bloodfell Caves enters the battlefield, you gain 1 life.

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

Sacrifice a creature: Put a +1/+1 counter on Bloodflow Connoisseur.

Flying

{B}, Pay 2 life: Put a +1/+1 counter on Bloodtracker.

When Bloodtracker leaves the battlefield, draw a card for each +1/+1 counter on it.

{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.

Carrion Feeder can't block.

Sacrifice a creature: Put a +1/+1 counter on Carrion Feeder.

Draw two cards. Then discard a card unless you attacked this turn.

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

Flying

When Conquering Manticore enters the battlefield, gain control of target creature an opponent controls until end of turn. Untap that creature. It gains haste until end of turn.

Counter target spell.

Crumbling Necropolis enters the battlefield tapped.

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

{T}, Sacrifice Daring Apprentice: Counter target spell.

Equipped creature gets +2/+2.

Whenever equipped creature dies, you may put a creature card from your hand onto the battlefield and attach Deathrender to it.

Equip {2}

Counter target spell. If an artifact or creature spell is countered this way, put that card onto the battlefield under your control instead of into its owner's graveyard.

Flash

Whenever a creature you control dies, each opponent sacrifices a creature.

Dimir Aqueduct enters the battlefield tapped.

When Dimir Aqueduct enters the battlefield, return a land you control to its owner's hand.

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

Dismal Backwater enters the battlefield tapped.

When Dismal Backwater enters the battlefield, you gain 1 life.

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

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

Haste

Whenever Dreadhorde Butcher deals combat damage to a player or planeswalker, put a +1/+1 counter on Dreadhorde Butcher.

When Dreadhorde Butcher dies, it deals damage equal to its power to any target.

Counter target creature spell. Put a +1/+1 counter on up to one target creature you control.

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

{T}, Sacrifice Fabled Passage: Search your library for a basic land card, put it onto the battlefield tapped, then shuffle. Then if you control four or more lands, untap that land.

Flying, haste

Sacrifice a creature: Falkenrath Aristocrat gains indestructible until end of turn. If the sacrificed creature was a Human, put a +1/+1 counter on Falkenrath Aristocrat.

At the beginning of each upkeep, if an opponent lost life last turn, put a +1/+1 counter on target creature you control.

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Whenever Flayer of the Hatebound or another creature enters the battlefield from your graveyard, that creature deals damage equal to its power to any target.

Flying

Gadrak, the Crown-Scourge can't attack unless you control four or more artifacts.

At the beginning of your end step, create a Treasure token for each nontoken creature that died this turn. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.")

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.

Protection from permanents with corruption counters on them

+1: Each opponent loses 2 life and you gain 2 life. Put a corruption counter on up to one other target creature or planeswalker.

-3: Gain control of target creature or planeswalker until end of turn. Untap it and put a corruption counter on it. It gains haste until end of turn.

-7: Gain control of each permanent with a corruption counter on it.

Deathtouch

When Gonti, Lord of Luxury enters the battlefield, look at the top four cards of target opponent's library, exile one of them face down, then put the rest on the bottom of that library in a random order. You may cast that card for as long as it remains exiled, and mana of any type can be spent to cast it.

Whenever a creature you don't control dies, return it to the battlefield under your control with an additional +1/+1 counter on it at the beginning of the next end step. That creature is a black Zombie in addition to its other colors and types.

Morph {B} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)

Whenever another nontoken creature you control dies, draw a card.

Search your library for a card, put that card into your hand, then shuffle. You lose 3 life.

Halimar Depths enters the battlefield tapped.

When Halimar Depths enters the battlefield, look at the top three cards of your library, then put them back in any order.

{T}: Add {U}.

Strive -- This spell costs {2}{R} more to cast for each target beyond the first.

Gain control of any number of target creatures until end of turn. Untap those creatures. They gain haste until end of turn.

Creatures you control with +1/+1 counters on them can't be blocked.

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

({T}: Add {U}.)

Izzet Boilerworks enters the battlefield tapped.

When Izzet Boilerworks enters the battlefield, return a land you control to its owner's hand.

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

Izzet Guildgate enters the battlefield tapped.

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

Other creatures you control get +1/+0.

Whenever a nontoken creature you control dies, Judith, the Scourge Diva deals 1 damage to any target.

Jwar Isle Refuge enters the battlefield tapped.

When Jwar Isle Refuge enters the battlefield, you gain 1 life.

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

Gain control of target creature or Vehicle until end of turn. Untap it. It gains haste until end of turn.

You may cast a spell with mana value 2 or less from your hand without paying its mana cost.

This spell can't be countered.

Counter target spell.

At the beginning of your upkeep, flip a coin. If you lose the flip, Mana Crypt deals 3 damage to you.

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

Dethrone (Whenever this creature attacks the player with the most life or tied for most life, put a +1/+1 counter on it.)

Other creatures you control have dethrone.

Whenever a creature you control with a +1/+1 counter on it dies, return that card to the battlefield under your control at the beginning of the next end step.

Gain control of target creature until end of turn. Put a +1/+1 counter on it and untap it. That creature gains haste until end of turn. (It can attack and {T} this turn.)

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.

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

({T}: Add {R}.)

Flying

Whenever a creature you control deals combat damage to a player, put that many +1/+1 counters on it.

Flying

When Patron of the Vein enters the battlefield, destroy target creature an opponent controls.

Whenever a creature an opponent controls dies, exile it and put a +1/+1 counter on each Vampire you control.

When Plaguecrafter enters the battlefield, each player sacrifices a creature or planeswalker. Each player who can't discards a card.

Exploit (When this creature enters the battlefield, you may sacrifice a creature.)

When Profaner of the Dead exploits a creature, return to their owners' hands all creatures your opponents control with toughness less than the exploited creature's toughness.

Whenever Pyreheart Wolf attacks, creatures you control gain menace until end of turn. (They can't be blocked except by two or more creatures.)

Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

Rakdos Guildgate enters the battlefield tapped.

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

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

Scry 2, then draw two cards. You lose 2 life.

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

Whenever River Kelpie or another permanent enters the battlefield from a graveyard, draw a card.

Whenever a player casts a spell from a graveyard, draw a card.

Persist (When this creature dies, if it had no -1/-1 counters on it, return it to the battlefield under its owner's control with a -1/-1 counter on it.)

Rupture Spire enters the battlefield tapped.

When Rupture Spire enters the battlefield, sacrifice it unless you pay {1}.

{T}: Add one mana of any color.

{T}: Add {C}.

{T}: Add {U} or {R}. Shivan Reef deals 1 damage to you.

{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.

When Sparring Construct dies, put a +1/+1 counter on target creature you control.

Haste

Whenever another creature you control dies, it deals damage equal to its power to target player or planeswalker.

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

({T}: Add {B}.)

Swiftwater Cliffs enters the battlefield tapped.

When Swiftwater Cliffs enters the battlefield, you gain 1 life.

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

Equipped creature gets +1/+1.

Whenever equipped creature attacks, you may search your library for a basic land card, put it onto the battlefield tapped, then shuffle.

Equip {2}

You may activate loyalty abilities of Teferi, Master of Time on any player's turn any time you could cast an instant.

+1: Draw a card, then discard a card.

-3: Target creature you don't control phases out. (Treat it and anything attached to it as though they don't exist until its controller's next turn.)

-10: Take two extra turns after this one.

Temple of Deceit enters the battlefield tapped.

When Temple of Deceit enters the battlefield, scry 1.

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

Temple of Malice enters the battlefield tapped.

When Temple of Malice enters the battlefield, scry 1.

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

Indestructible

As long as your devotion to blue is less than five, Thassa isn't a creature.

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

{3}{U}: Tap another target creature.

Haste

Whenever Thraximundar attacks, defending player sacrifices a creature.

Whenever a player sacrifices a creature, you may put a +1/+1 counter on Thraximundar.

Flying

Whenever Thrummingbird deals combat damage to a player, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Pay 3 life: Put a +1/+1 counter on target creature.

Return target spell or creature to its owner's hand.

As an additional cost to cast this spell, sacrifice a creature.

Draw two cards.

Whenever a creature enters the battlefield under your control, it deals damage equal to its power to any target.

{T}, Sacrifice two creatures: Return target creature card from your graveyard to the battlefield.

When Woe Strider enters the battlefield, create a 0/1 white Goat creature token.

Sacrifice another creature: Scry 1.

Escape--{3}{B}{B}, Exile four other cards from your graveyard. (You may cast this card from your graveyard for its escape cost.)

Woe Strider escapes with two +1/+1 counters on it.

Haste

Whenever a creature an opponent controls dies, put a +1/+1 counter on Yahenni, Undying Partisan.

Sacrifice another creature: Yahenni gains indestructible until end of turn.

Haste

When Zealous Conscripts enters the battlefield, gain control of target permanent until end of turn. Untap that permanent. It gains haste until end of turn.