Probing Telepathy -- Whenever a creature entering the battlefield 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.
2 /
3
{U}
An Offer You Can't Refuse
Instant
Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")
{2}
Arcane Signet
Artifact
{T}: Add one mana of any color in your commander's color identity.
{1}{U/B}{U/B}
Ashiok, Dream Render
Legendary Planeswalker - Ashiok
Spells and abilities your opponents control can't cause their controller to search their library.
-1: Target player mills four cards. Then exile each opponent's graveyard.
L:
5
{2}{U}{U}
Bident of Thassa
Legendary Enchantment Artifact
Whenever a creature you control deals combat damage to a player, you may draw a card.
{1}{U}, {T}: Creatures your opponents control attack this turn if able.
--
Bojuka Bog
Land
Bojuka Bog enters the battlefield tapped.
When Bojuka Bog enters the battlefield, exile target player's graveyard.
{T}: Add {B}.
{2}{U}
Bruvac the Grandiloquent
Legendary Creature - Human Advisor
If an opponent would mill one or more cards, they mill twice that many cards instead. (To mill a card, a player puts the top card of their library into their graveyard.)
1 /
4
--
Clearwater Pathway
Land
{T}: Add {U}.
--
Murkwater Pathway
Land
{T}: Add {B}.
--
Contaminated Aquifer
Land - Island Swamp
({T}: Add {U} or {B}.)
Contaminated Aquifer enters the battlefield tapped.
{U}{U}
Counterspell
Instant
Counter target spell.
--
Creeping Tar Pit
Land
Creeping Tar Pit enters the battlefield tapped.
{T}: Add {U} or {B}.
{1}{U}{B}: Creeping Tar Pit becomes a 3/2 blue and black Elemental creature until end of turn and can't be blocked this turn. It's still a land.
{1}{U}
Cyclonic Rift
Instant
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.")
{B}
Dark Ritual
Instant
Add {B}{B}{B}.
--
Darkslick Shores
Land
Darkslick Shores enters the battlefield tapped unless you control two or fewer other lands.
{T}: Add {U} or {B}.
--
Dimir Aqueduct
Land
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
Land
Dismal Backwater enters the battlefield tapped.
When Dismal Backwater enters the battlefield, you gain 1 life.
{T}: Add {U} or {B}.
{1}{U}
Dramatic Reversal
Instant
Untap all nonland permanents you control.
--
Duskmantle, House of Shadow
Land
{T}: Add {C}.
{U}{B}, {T}: Target player mills a card.
{2}{B}{B}
Faceless Butcher
Creature - Nightmare Horror
When Faceless Butcher enters the battlefield, exile target creature other than Faceless Butcher.
When Faceless Butcher leaves the battlefield, return the exiled card to the battlefield under its owner's control.
2 /
3
{2}
Fellwar Stone
Artifact
{T}: Add one mana of any color that a land an opponent controls could produce.
--
Fetid Pools
Land - Island Swamp
({T}: Add {U} or {B}.)
Fetid Pools enters the battlefield tapped.
Cycling {2} ({2}, Discard this card: Draw a card.)
{2}{U}
Fierce Guardianship
Instant
If you control a commander, you may cast this spell without paying its mana cost.
Counter target noncreature spell.
{3}{B}{B}
Final Parting
Sorcery
Search your library for two cards. Put one into your hand and the other into your graveyard. Then shuffle.
{4}{U}
Flow of Knowledge
Instant
Draw a card for each Island you control, then discard two cards.
{3}{U}{U}
Force of Will
Instant
You may pay 1 life and exile a blue card from your hand rather than pay this spell's mana cost.
Counter target spell.
{2}{U}
Fraying Sanity
Enchantment - Aura Curse
Enchant player
At the beginning of each end step, enchanted player mills X cards, where X is the number of cards put into their graveyard from anywhere this turn.
{2}{U}
Ghostly Flicker
Instant
Exile two target artifacts, creatures, and/or lands you control, then return those cards to the battlefield under your control.
{5}
Gilded Lotus
Artifact
{T}: Add three mana of any one color.
{2}{U}
Grell Philosopher
Creature - Horror Wizard
Aberrant Tinkering -- When Grell Philosopher enters the battlefield and at the beginning of your upkeep, each Horror you control gains all activated abilities of target artifact an opponent controls until end of turn. You may spend blue mana as though it were mana of any color to activate those abilities.
1 /
4
{1}{B}{B}
Grimdancer
Creature - Nightmare
Grimdancer enters the battlefield with your choice of two different counters on it from among menace, deathtouch, and lifelink.
3 /
3
{2}{B}{B}
Hagra Mauling
Instant
This spell costs {1} less to cast if an opponent controls no basic lands.
Destroy target creature.
--
Hagra Broodpit
Land
Hagra Broodpit enters the battlefield tapped.
{T}: Add {B}.
{4}
Helm of the Host
Legendary Artifact - Equipment
At the beginning of combat on your turn, create a token that's a copy of equipped creature, except the token isn't legendary. That token gains haste.
Equip {5}
{3}
Herald's Horn
Artifact
As Herald's Horn enters the battlefield, choose a creature type.
Creature spells you cast of the chosen type cost {1} less to cast.
At the beginning of your upkeep, look at the top card of your library. If it's a creature card of the chosen type, you may reveal it and put it into your hand.
{5}{U}{U}
Hullbreaker Horror
Creature - Kraken Horror
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.
7 /
8
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
{2}
Isochron Scepter
Artifact
Imprint -- When Isochron Scepter enters the battlefield, you may exile an instant card with mana value 2 or less from your hand.
{2}, {T}: You may copy the exiled card. If you do, you may cast the copy without paying its mana cost.
{0}
Jeweled Lotus
Artifact
{T}, Sacrifice Jeweled Lotus: Add three mana of any one color. Spend this mana only to cast your commander.
{4}{B/P}{B/P}{B/P}
K'rrik, Son of Yawgmoth
Legendary Creature - Phyrexian Horror Minion
({B/P} can be paid with either {B} or 2 life.)
Lifelink
For each {B} in a cost, you may pay 2 life rather than pay that mana.
Whenever you cast a black spell, put a +1/+1 counter on K'rrik, Son of Yawgmoth.
2 /
2
{2}{B}{B}
Leyline of the Void
Enchantment
If Leyline of the Void 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.
{1}{U}
Maddening Cacophony
Sorcery
Kicker {3}{U}
Each opponent mills eight cards. If this spell was kicked, instead each opponent mills half their library, rounded up.
{B}
Malakir Rebirth
Instant
Choose target creature. You lose 2 life. Until end of turn, that creature gains "When this creature dies, return it to the battlefield tapped under its owner's control."
--
Malakir Mire
Land
Malakir Mire enters the battlefield tapped.
{T}: Add {B}.
{U}{U}
Mana Drain
Instant
Counter target spell. At the beginning of your next main phase, add an amount of {C} equal to that spell's mana value.
{1}{B}{B}
Mask of Griselbrand
Legendary Artifact - Equipment
Equipped creature has flying and lifelink.
Whenever equipped creature dies, you may pay X life, where X is its power. If you do, draw X cards.
Equip {3}
{1}{U}
Memory Lapse
Instant
Counter target spell. If that spell is countered this way, put it on top of its owner's library instead of into that player's graveyard.
{3}{U}{U}
Mind Flayer
Creature - Horror
Dominate Monster -- When Mind Flayer enters the battlefield, gain control of target creature for as long as you control Mind Flayer.
3 /
3
{2}{U}
Misleading Signpost
Artifact
Flash
When Misleading Signpost enters the battlefield during the declare attackers step, you may reselect which player or permanent target attacking creature is attacking. (It can't attack its controller or their permanents.)
{T}: Add {U}.
--
Myriad Landscape
Land
Myriad Landscape enters the battlefield tapped.
{T}: Add {C}.
{2}, {T}, Sacrifice Myriad Landscape: Search your library for up to two basic land cards that share a land type, put them onto the battlefield tapped, then shuffle.
{U}
Mystic Remora
Enchantment
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}.
{U}
Mystical Tutor
Instant
Search your library for an instant or sorcery card, reveal it, then shuffle and put that card on top.
{2}{B}{B}
No Mercy
Enchantment
Whenever a creature deals damage to you, destroy it.
{2}{B}
Pelakka Predation
Sorcery
Target opponent reveals their hand. You choose a card from it with mana value 3 or greater. That player discards that card.
--
Pelakka Caverns
Land
Pelakka Caverns enters the battlefield tapped.
{T}: Add {B}.
{U}
Personal Tutor
Sorcery
Search your library for a sorcery card, reveal it, then shuffle and put that card on top.
{B}{B}{B}{B}
Phyrexian Obliterator
Creature - Phyrexian Horror
Trample
Whenever a source deals damage to Phyrexian Obliterator, that source's controller sacrifices that many permanents.
5 /
5
{1}{U}
Planar Incision
Instant
Exile target artifact or creature, then return it to the battlefield under its owner's control with a +1/+1 counter on it.
{B}
Planar Void
Enchantment
Whenever another card is put into a graveyard from anywhere, exile that card.
--
Plaza of Heroes
Land
{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.
--
Port of Karfell
Land
Port of Karfell enters the battlefield tapped.
{T}: Add {U}.
{3}{U}{B}{B}, {T}, Sacrifice Port of Karfell: Mill four cards, then return a creature card from your graveyard to the battlefield tapped. (To mill a card, put the top card of your library into your graveyard.)
{2}{B}{B}
Ravenous Chupacabra
Creature - Beast Horror
When Ravenous Chupacabra enters the battlefield, destroy target creature an opponent controls.
2 /
2
{U}{U}
Redirect
Instant
You may choose new targets for target spell.
{2}{U}
Rhystic Study
Enchantment
Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.
{4}
Roaming Throne
Artifact Creature - Golem
Ward {2}
As Roaming Throne enters the battlefield, choose a creature type.
Roaming Throne is the chosen type in addition to its other types.
If a triggered ability of another creature you control of the chosen type triggers, it triggers an additional time.
4 /
4
--
Rogue's Passage
Land
{T}: Add {C}.
{4}, {T}: Target creature can't be blocked this turn.
{4}{U}
Rush of Knowledge
Sorcery
Draw cards equal to the highest mana value among permanents you control.
{3}{B}{B}
Shadows' Verdict
Sorcery
Exile all creatures and planeswalkers with mana value 3 or less from the battlefield and all creature and planeswalker cards with mana value 3 or less from all graveyards.
{1}
Shadowspear
Legendary Artifact - Equipment
Equipped creature gets +1/+1 and has trample and lifelink.
{1}: Permanents your opponents control lose hexproof and indestructible until end of turn.
Equip {2}
--
Shipwreck Marsh
Land
Shipwreck Marsh enters the battlefield tapped unless you control two or more other lands.
{T}: Add {U} or {B}.
{2}{U}
Silundi Vision
Instant
Look at the top six cards of your library. You may reveal an instant or sorcery card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
--
Silundi Isle
Land
Silundi Isle enters the battlefield tapped.
{T}: Add {U}.
{X}{U}{U}
Silver Scrutiny
Sorcery
You may cast Silver Scrutiny as though it had flash if X is 3 or less.
Draw X cards.
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{2}
Spellskite
Artifact Creature - Phyrexian Horror
{U/P}: Change a target of target spell or ability to Spellskite. ({U/P} can be paid with either {U} or 2 life.)
0 /
4
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
--
Swamp
Basic Land - Swamp
({T}: Add {B}.)
{U}
Swan Song
Instant
Counter target enchantment, instant, or sorcery spell. Its controller creates a 2/2 blue Bird creature token with flying.
{2}
Swiftfoot Boots
Artifact - Equipment
Equipped creature has hexproof and haste. (It can't be the target of spells or abilities your opponents control.)
Equip {1}
{1}{U}{U}
Tasha's Hideous Laughter
Sorcery
Each opponent exiles cards from the top of their library until that player has exiled cards with total mana value 20 or more.
{2}{U}{U}
Thopter Spy Network
Enchantment
At the beginning of your upkeep, if you control an artifact, create a 1/1 colorless Thopter artifact creature token with flying.
Whenever one or more artifact creatures you control deal combat damage to a player, draw a card.
{4}
Thran Dynamo
Artifact
{T}: Add {C}{C}{C}.
{5}{B}{B}
Toxrill, the Corrosive
Legendary Creature - Slug Horror
At the beginning of each end step, put a slime counter on each creature you don't control.
Creatures you don't control get -1/-1 for each slime counter on them.
Whenever a creature you don't control with a slime counter on it dies, create a 1/1 black Slug creature token.
{U}{B}, Sacrifice a Slug: Draw a card.
7 /
7
{3}{U}{B}
Umbris, Fear Manifest
Legendary Creature - Nightmare Horror
Umbris, Fear Manifest gets +1/+1 for each card your opponents own in exile.
Whenever Umbris or another Nightmare or Horror enters the battlefield under your control, target opponent exiles cards from the top of their library until they exile a land card.
1 /
1
{3}
Urza's Incubator
Artifact
As Urza's Incubator enters the battlefield, choose a creature type.
Creature spells of the chosen type cost {2} less to cast.
{4}{U}{ // }{1}{U}
Virtue of Knowledge // Vantress Visions
Enchantment // Instant - Adventure
If a permanent entering the battlefield causes a triggered ability of a permanent you control to trigger, that ability triggers an additional time.
Copy target activated or triggered ability you control. You may choose new targets for the copy.
--
Waterfront District
Land
Waterfront District enters the battlefield tapped.
{T}: Add {U} or {B}.
{2}{U}{B}, {T}, Sacrifice Waterfront District: Draw a card.
--
Watery Grave
Land - Island Swamp
({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.
{1}{U}
Wharf Infiltrator
Creature - Human Horror
Skulk (This creature can't be blocked by creatures with greater power.)
Whenever Wharf Infiltrator 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.
1 /
1
{3}
Whispersilk Cloak
Artifact - Equipment
Equipped creature can't be blocked and has shroud. (It can't be the target of spells or abilities.)
Equip {2}
{3}{U}
Wonder
Creature - Incarnation
Flying
As long as Wonder is in your graveyard and you control an Island, creatures you control have flying.
2 /
2
{3}
Worn Powerstone
Artifact
Worn Powerstone enters the battlefield tapped.
{T}: Add {C}{C}.
{2}{U}
Zellix, Sanity Flayer
Legendary Creature - Horror
Hive Mind -- Whenever a player mills one or more creature cards, you create a 1/1 black Horror creature token.
{1}, {T}: Target player mills three cards.
Choose a Background (You can have a Background as a second commander.)
2 /
3
{2}{U}
Chasm Skulker
Creature - Squid Horror
Whenever you draw a card, put a +1/+1 counter on Chasm Skulker.
When Chasm Skulker dies, create X 1/1 blue Squid creature tokens with islandwalk, where X is the number of +1/+1 counters on Chasm Skulker. (They can't be blocked as long as defending player controls an Island.)
1 /
1
{3}{B}
Dread Presence
Creature - Nightmare
Whenever a Swamp enters the battlefield under your control, choose one --
• You draw a card and you lose 1 life.
• Dread Presence deals 2 damage to any target and you gain 2 life.
3 /
3
{1}{B}{B}
Grimdancer
Creature - Nightmare
Grimdancer enters the battlefield with your choice of two different counters on it from among menace, deathtouch, and lifelink.
3 /
3
{X}{U}
March of Swirling Mist
Instant
As an additional cost to cast this spell, you may exile any number of blue cards from your hand. This spell costs {2} less to cast for each card exiled this way.
Up to X target creatures phase out. (While they're phased out, they're treated as though they don't exist. Each one phases in before its controller untaps during their next untap step.)
{3}{U}{U}
Traumatize
Sorcery
Target player mills half their library, rounded down.