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.
{6}{B}{B}
Avatar of Woe
Creature - Avatar
If there are ten or more creature cards total in all graveyards, this spell costs {6} less to cast.
Fear (This creature can't be blocked except by artifact creatures and/or black creatures.)
{T}: Destroy target creature. It can't be regenerated.
6 /
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.
{4}
Bubble Matrix
Artifact
Prevent all damage that would be dealt to creatures.
{4}{U}{B}
Callidus Assassin
Creature - Human Shapeshifter Assassin
Flash
Polymorphine -- You may have Callidus Assassin enter the battlefield tapped as a copy of any creature on the battlefield, except it has "When this creature enters the battlefield, destroy up to one other target creature with the same name as this creature."
3 /
3
{B}
Changeling Outcast
Creature - Shapeshifter
Changeling (This card is every creature type.)
Changeling Outcast can't block and can't be blocked.
1 /
1
{3}
Chromatic Lantern
Artifact
Lands you control have "{T}: Add one mana of any color."
{T}: Add one mana of any color.
--
Clearwater Pathway
Land
{T}: Add {U}.
--
Murkwater Pathway
Land
{T}: Add {B}.
{2}{U}{U}
Coastal Piracy
Enchantment
Whenever a creature you control deals combat damage to an opponent, you may draw a card.
{U}{U}
Counterspell
Instant
Counter target spell.
{3}
Crawlspace
Artifact
No more than two creatures can attack you each combat.
{2}{B}
Dark Impostor
Creature - Vampire Assassin
{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.
2 /
2
{B}
Darkness
Instant
Prevent all combat damage that would be dealt this turn.
{2}{B}
Dauthi Embrace
Enchantment
{B}{B}: Target creature gains shadow until end of turn. (It can block or be blocked by only creatures with shadow.)
{2}
Dolmen Gate
Artifact
Prevent all combat damage that would be dealt to attacking creatures you control.
{2}
Dowsing Dagger
Artifact - Equipment
When Dowsing Dagger enters the battlefield, target opponent creates two 0/2 green Plant creature tokens with defender.
Equipped creature gets +2/+1.
Whenever equipped creature deals combat damage to a player, you may transform Dowsing Dagger.
Equip {2}
--
Lost Vale
Land
(Transforms from Dowsing Dagger.)
{T}: Add three mana of any one color.
--
Drowned Catacomb
Land
Drowned Catacomb enters the battlefield tapped unless you control an Island or a Swamp.
{T}: Add {U} or {B}.
{7}
Elbrus, the Binding Blade
Legendary Artifact - Equipment
Equipped creature gets +1/+0.
When equipped creature deals combat damage to a player, unattach Elbrus, the Binding Blade, then transform it.
Equip {1}
--
Withengar Unbound
Legendary Creature - Demon
Flying, intimidate, trample (A creature with intimidate can't be blocked except by artifact creatures and/or creatures that share a color with it.)
Whenever a player loses the game, put thirteen +1/+1 counters on Withengar Unbound.
{2}{U}{B}
Etrata, the Silencer
Legendary Creature - Vampire Assassin
Etrata, the Silencer can't be blocked.
Whenever Etrata deals combat damage to a player, exile target creature that player controls and put a hit counter on that card. That player loses the game if they own three or more exiled cards with hit counters on them. Etrata's owner shuffles Etrata into their library.
3 /
5
{3}{B}
Grim Hireling
Creature - Tiefling Rogue
Whenever one or more creatures you control deal combat damage to a player, create two Treasure tokens.
{B}, Sacrifice X Treasures: Target creature gets -X/-X until end of turn. Activate only as a sorcery.
3 /
2
{2}{U}
Guard Gomazoa
Creature - Jellyfish
Defender, flying
Prevent all combat damage that would be dealt to Guard Gomazoa.
1 /
3
{7}
Guardian of the Ages
Artifact Creature - Golem
Defender (This creature can't attack.)
When a creature attacks you or a planeswalker you control, if Guardian of the Ages has defender, it loses defender and gains trample.
7 /
7
{1}{B}
Guildsworn Prowler
Creature - Tiefling Rogue Assassin
Deathtouch
When Guildsworn Prowler dies, if it wasn't blocking, draw a card.
2 /
1
{B}
Guul Draz Assassin
Creature - Vampire Assassin
Level up {1}{B} ({1}{B}: Put a level counter on this. Level up only as a sorcery.)
LEVEL 2-3
2/2
{B}, {T}: Target creature gets -2/-2 until end of turn.
LEVEL 4+
4/4
{B}, {T}: Target creature gets -4/-4 until end of turn.
1 /
1
{B}
Hired Poisoner
Creature - Human Assassin
Deathtouch
1 /
1
{2}{B}
Infectious Inquiry
Sorcery
You draw two cards and you lose 2 life. Each opponent gets a poison counter.
{2}{B}{B}{B}
Intimidation
Enchantment
Creatures you control have fear. (They can't be blocked except by artifact creatures and/or black creatures.)
--
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}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
--
Island
Basic Land - Island
({T}: Add {U}.)
{1}{U}
Kaijin of the Vanishing Touch
Creature - Spirit
Defender (This creature can't attack.)
Whenever Kaijin of the Vanishing Touch blocks a creature, return that creature to its owner's hand at end of combat. (Return it only if it's on the battlefield.)
0 /
3
{B}{B}
Kiku, Night's Flower
Legendary Creature - Human Assassin
{2}{B}{B}, {T}: Target creature deals damage to itself equal to its power.
1 /
1
{5}{B}{B}
Kindred Dominance
Sorcery
Choose a creature type. Destroy all creatures that aren't of the chosen type.
{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}
Mari, the Killing Quill
Legendary Creature - Vampire Assassin
Whenever a creature an opponent controls dies, exile it with a hit counter on it.
Assassins, Mercenaries, and Rogues you control have deathtouch and "Whenever this creature deals combat damage to a player, you may remove a hit counter from a card that player owns in exile. If you do, draw a card and create two Treasure tokens."
3 /
2
{3}{B}{B}
Massacre Girl
Legendary Creature - Human Assassin
Menace
When Massacre Girl enters the battlefield, each other creature gets -1/-1 until end of turn. Whenever a creature dies this turn, each creature other than Massacre Girl gets -1/-1 until end of turn.
4 /
4
--
Morphic Pool
Land
Morphic Pool enters the battlefield tapped unless you have two or more opponents.
{T}: Add {U} or {B}.
{4}{U}{U}
Mu Yanling
Legendary Planeswalker - Yanling
+2: Target creature can't be blocked this turn.
-3: Draw two cards.
-10: Tap all creatures your opponents control. You take an extra turn after this one.
L:
5
{3}
Nemesis Mask
Artifact - Equipment
All creatures able to block equipped creature do so.
Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the creature leaves.)
{2}{B}{B}
No Mercy
Enchantment
Whenever a creature deals damage to you, destroy it.
--
Nykthos, Shrine to Nyx
Legendary Land
{T}: Add {C}.
{2}, {T}: Choose a color. Add an amount of mana of that color equal to your devotion to that color. (Your devotion to a color is the number of mana symbols of that color in the mana costs of permanents you control.)
{2}{B}
Orzhov Euthanist
Creature - Human Assassin
Haunt (When this creature dies, exile it haunting target creature.)
When Orzhov Euthanist enters the battlefield or the creature it haunts dies, destroy target creature that was dealt damage this turn.
2 /
2
{U}
Ponder
Sorcery
Look at the top three cards of your library, then put them back in any order. You may shuffle.
Draw a card.
{2}{U}
Propaganda
Enchantment
Creatures can't attack you unless their controller pays {2} for each creature they control that's attacking you.
{2}
Prowler's Helm
Artifact - Equipment
Equipped creature can't be blocked except by Walls.
Equip {2}
{2}{U}{B}
Ramses, Assassin Lord
Legendary Creature - Human Assassin
Deathtouch
Other Assassins you control get +1/+1.
Whenever a player loses the game, if they were attacked this turn by an Assassin you controlled, you win the game.
4 /
4
{3}{B}
Ravenloft Adventurer
Creature - Human Rogue Assassin
When Ravenloft Adventurer enters the battlefield, you take the initiative.
If a creature an opponent controls would die, instead exile it and put a hit counter on it.
Whenever Ravenloft Adventurer attacks, if you've completed a dungeon, defending player loses 1 life for each card they own in exile with a hit counter on it.
3 /
4
--
Rhystic Cave
Land
{T}: Choose a color. Add one mana of that color unless any player pays {1}. Activate only as an instant.
{2}{U}
Rhystic Study
Enchantment
Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.
{1}{B}{B}
Royal Assassin
Creature - Human Assassin
{T}: Destroy target tapped creature.
1 /
1
{B}{B}
Scarblade Elite
Creature - Elf Assassin
{T}, Exile an Assassin card from your graveyard: Destroy target creature.
2 /
2
--
Shipwreck Marsh
Land
Shipwreck Marsh enters the battlefield tapped unless you control two or more other lands.
{T}: Add {U} or {B}.
--
Shizo, Death's Storehouse
Legendary Land
{T}: Add {B}.
{B}, {T}: Target legendary creature gains fear until end of turn. (It can't be blocked except by artifact creatures and/or black creatures.)
{2}{B}
Sleeper's Guile
Enchantment - Aura
Enchant creature
Enchanted creature has fear. (It can't be blocked except by artifact creatures and/or black creatures.)
When Sleeper's Guile is put into a graveyard from the battlefield, return Sleeper's Guile to its owner's hand.
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{2}{B}{B}
Species Specialist
Creature - Human Warrior
As Species Specialist enters the battlefield, choose a creature type.
Whenever a creature of the chosen type dies, you may draw a card.
2 /
3
{1}{U}
Stasis
Enchantment
Players skip their untap steps.
At the beginning of your upkeep, sacrifice Stasis unless you pay {U}.
--
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}.)
--
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}.)
--
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}.)
{3}
Sword of Light and Shadow
Artifact - Equipment
Equipped creature gets +2/+2 and has protection from white and from black.
Whenever equipped creature deals combat damage to a player, you gain 3 life and you may return up to one target creature card from your graveyard to your hand.
Equip {2}
{2}
Talisman of Dominance
Artifact
{T}: Add {C}.
{T}: Add {U} or {B}. Talisman of Dominance deals 1 damage to you.
--
The Black Gate
Legendary Land - Gate
As The Black Gate enters the battlefield, you may pay 3 life. If you don't, it enters the battlefield tapped.
{T}: Add {B}.
{1}{B}, {T}: Choose a player with the most life or tied for most life. Target creature can't be blocked by creatures that player controls this turn.
{3}
The Stasis Coffin
Legendary Artifact
{2}, {T}, Exile The Stasis Coffin: You gain protection from everything until your next turn.
{3}{B}
Thorn of the Black Rose
Creature - Human Assassin
Deathtouch
When Thorn of the Black Rose enters the battlefield, you become the monarch.
1 /
3
{4}{U}{U}
Time Stop
Instant
End the turn. (Exile all spells and abilities from the stack, including this card. The player whose turn it is discards down to their maximum hand size. Damage wears off, and "this turn" and "until end of turn" effects end.)
{2}
Trailblazer's Boots
Artifact - Equipment
Equipped creature has nonbasic landwalk. (It can't be blocked as long as defending player controls a nonbasic land.)
Equip {2}
{3}{B}
Tree of Perdition
Creature - Plant
Defender
{T}: Exchange target opponent's life total with Tree of Perdition's toughness.
0 /
13
{2}{B}
Virtus the Veiled
Legendary Creature - Azra Assassin
Partner with Gorm the Great (When this creature enters the battlefield, target player may put Gorm into their hand from their library, then shuffle.)
Deathtouch
Whenever Virtus the Veiled deals combat damage to a player, that player loses half their life, rounded up.
1 /
1
{B}
Vorpal Sword
Artifact - Equipment
Equipped creature gets +2/+0 and has deathtouch.
{5}{B}{B}{B}: Until end of turn, Vorpal Sword gains "Whenever equipped creature deals combat damage to a player, that player loses the game."
Equip {B}{B}
{1}{B}
Wall of Souls
Creature - Wall
Defender (This creature can't attack.)
Whenever Wall of Souls is dealt combat damage, it deals that much damage to target opponent or planeswalker.
0 /
4
{3}{U}
Wall of Stolen Identity
Creature - Shapeshifter Wall
You may have Wall of Stolen Identity enter the battlefield as a copy of any creature on the battlefield, except it's a Wall in addition to its other types and has defender. When you do, tap the copied creature and it doesn't untap during its controller's untap step for as long as you control Wall of Stolen Identity.
0 /
0
{3}
Weathered Sentinels
Artifact Creature - Wall
Defender, vigilance, reach, trample
Weathered Sentinels can attack players who attacked you during their last turn as though it didn't have defender.
Whenever Weathered Sentinels attacks, it gets +3/+3 and gains indestructible until end of turn.
2 /
5
{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}
{2}
Winter Orb
Artifact
As long as Winter Orb is untapped, players can't untap more than one land during their untap steps.