Counter target noncreature spell. Its controller creates two Treasure tokens. (They're artifacts with "{T}, Sacrifice this artifact: Add one mana of any color.")
{U}
Annul
Instant
Counter target artifact or enchantment spell.
{1}{U}
Anticognition
Instant
Counter target creature or planeswalker spell unless its controller pays {2}. If an opponent has eight or more cards in their graveyard, instead counter that spell, then scry 2.
{1}{U}
Arcane Denial
Instant
Counter target spell. Its controller may draw up to two cards at the beginning of the next turn's upkeep.
You draw a card at the beginning of the next turn's upkeep.
{2}
Arcane Signet
Artifact
{T}: Add one mana of any color in your commander's color identity.
{U}{U}{U}
Archmage's Charm
Instant
Choose one --
• Counter target spell.
• Target player draws two cards.
• Gain control of target nonland permanent with mana value 1 or less.
{1}{U}
Armguard Familiar
Artifact Creature - Equipment Beast
Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)
Equipped creature gets +2/+1 and has ward {2}.
Reconfigure {4} ({4}: Attach to target creature you control; or unattach from a creature. Reconfigure only as a sorcery. While attached, this isn't a creature.)
2 /
1
{1}{U}{U}
Bane's Contingency
Instant
Counter target spell. If that spell targets a commander you control, instead counter that spell, scry 2, then draw a card.
{3}{U}{U}
Baral's Expertise
Sorcery
Return up to three target artifacts and/or creatures to their owners' hands.
You may cast a spell with mana value 4 or less from your hand without paying its mana cost.
{1}{U}
Baral, Chief of Compliance
Legendary Creature - Human Wizard
Instant and sorcery spells you cast cost {1} less to cast.
Whenever a spell or ability you control counters a spell, you may draw a card. If you do, discard a card.
1 /
3
{2}{U}{U}
Bone to Ash
Instant
Counter target creature spell.
Draw a card.
{1}{U}
Brineborn Cutthroat
Creature - Merfolk Pirate
Flash (You may cast this spell any time you could cast an instant.)
Whenever you cast a spell during an opponent's turn, put a +1/+1 counter on Brineborn Cutthroat.
2 /
1
{1}{U}{U}
Broken Concentration
Instant
Counter target spell.
Madness {3}{U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
{6}
Caged Sun
Artifact
As Caged Sun enters the battlefield, choose a color.
Creatures you control of the chosen color get +1/+1.
Whenever a land's ability causes you to add one or more mana of the chosen color, add one additional mana of that color.
{2}{U}
Calculated Dismissal
Instant
Counter target spell unless its controller pays {3}.
Spell mastery -- If there are two or more instant and/or sorcery cards in your graveyard, scry 2. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)
{1}{U}{U}
Cancel
Instant
Counter target spell.
{U}
Ceremonious Rejection
Instant
Counter target colorless spell.
{1}{U}
Cerulean Drake
Creature - Drake
Flying
Protection from red (This creature can't be blocked, targeted, dealt damage, enchanted, or equipped by anything red.)
Sacrifice Cerulean Drake: Counter target spell that targets you.
1 /
1
{2}{U}
Circular Logic
Instant
Counter target spell unless its controller pays {1} for each card in your graveyard.
Madness {U} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)
{3}
Commander's Sphere
Artifact
{T}: Add one mana of any color in your commander's color identity.
Sacrifice Commander's Sphere: Draw a card.
{3}{U}{U}
Confirm Suspicions
Instant
Counter target spell.
Investigate three times. (To investigate, create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.")
{1}{U}
Confound
Instant
Counter target spell that targets a creature.
Draw a card.
{3}{U}{U}
Contradict
Instant
Counter target spell.
Draw a card.
{2}{U}
Convolute
Instant
Counter target spell unless its controller pays {4}.
{U}
Cosi's Trickster
Creature - Merfolk Wizard
Whenever an opponent shuffles their library, you may put a +1/+1 counter on Cosi's Trickster.
1 /
1
{4}{U}{U}
Counterlash
Instant
Counter target spell. You may cast a spell that shares a card type with it from your hand without paying its mana cost.
{2}{U}{U}
Countermand
Instant
Counter target spell. Its controller mills four cards.
{U}{U}
Counterspell
Instant
Counter target spell.
{2}{U}
Countervailing Winds
Instant
Counter target spell unless its controller pays {1} for each card in your graveyard.
Cycling {2} ({2}, Discard this card: Draw a card.)
{1}{U}{U}{U}
Cryptic Command
Instant
Choose two --
• Counter target spell.
• Return target permanent to its owner's hand.
• Tap all creatures your opponents control.
• Draw a card.
{U}
Cursecatcher
Creature - Merfolk Wizard
Sacrifice Cursecatcher: Counter target instant or sorcery spell unless its controller pays {1}.
Indestructible (Effects that say "destroy" don't destroy this artifact.)
At the beginning of your upkeep, you may put a charge counter on Darksteel Reactor.
When Darksteel Reactor has twenty or more charge counters on it, you win the game.
{U}{U}
Declaration of Naught
Enchantment
As Declaration of Naught enters the battlefield, choose a card name.
{U}: Counter target spell with the chosen name.
{4}{U}
Deepglow Skate
Creature - Fish
When Deepglow Skate enters the battlefield, double the number of each kind of counter on any number of target permanents.
3 /
3
{2}{U}
Deny Existence
Instant
Counter target creature spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.
{3}{U}{U}
Desertion
Instant
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.
{1}{U}
Diplomatic Escort
Creature - Human Spellshaper
{U}, {T}, Discard a card: Counter target spell or ability that targets a creature.
1 /
1
{1}{U}{U}
Disallow
Instant
Counter target spell, activated ability, or triggered ability. (Mana abilities can't be targeted.)
{1}{U}{U}
Disappearing Act
Instant
As an additional cost to cast this spell, return a permanent you control to its owner's hand.
Counter target spell.
{3}{U}{U}
Disciple of the Ring
Creature - Human Wizard
{1}, Exile an instant or sorcery card from your graveyard: Choose one --
• Counter target noncreature spell unless its controller pays {2}.
• Disciple of the Ring gets +1/+1 until end of turn.
• Tap target creature.
• Untap target creature.
3 /
4
{U}
Dispel
Instant
Counter target instant spell.
{2}{U}
Disruptive Pitmage
Creature - Human Wizard
{T}: Counter target spell unless its controller pays {1}.
Morph {U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)
1 /
1
{1}{U}{U}
Dissipate
Instant
Counter target spell. If that spell is countered this way, exile it instead of putting it into its owner's graveyard.
{2}{U}
Ertai, Wizard Adept
Legendary Creature - Human Wizard
{2}{U}{U}, {T}: Counter target spell.
1 /
1
{1}
Expedition Map
Artifact
{2}, {T}, Sacrifice Expedition Map: Search your library for a land card, reveal it, put it into your hand, then shuffle.
{2}{U}
Flux Channeler
Creature - Human Wizard
Whenever you cast a noncreature spell, proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)
2 /
2
{4}{U}{U}
Frost Titan
Creature - Giant
Whenever Frost Titan becomes the target of a spell or ability an opponent controls, counter that spell or ability unless its controller pays {2}.
Whenever Frost Titan enters the battlefield or attacks, tap target permanent. It doesn't untap during its controller's next untap step.
6 /
6
{3}{U}{U}
Frostfist Strider
Creature - Elemental Giant
Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)
When Frostfist Strider enters the battlefield, tap target creature an opponent controls and put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)
4 /
4
{5}
Gauntlet of Power
Artifact
As Gauntlet of Power enters the battlefield, choose a color.
Creatures of the chosen color get +1/+1.
Whenever a basic land is tapped for mana of the chosen color, its controller adds an additional one mana of that color.
{3}{U}{U}{U}
Guile
Creature - Elemental Incarnation
Guile can't be blocked except by three or more creatures.
If a spell or ability you control would counter a spell, instead exile that spell and you may play that card without paying its mana cost.
When Guile is put into a graveyard from anywhere, shuffle it into its owner's library.
6 /
6
{U}
High Tide
Instant
Until end of turn, whenever a player taps an Island for mana, that player adds an additional {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}.)
--
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}.)
--
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}.)
{4}{U}{U}
Jetting Glasskite
Creature - Spirit
Flying
Whenever Jetting Glasskite becomes the target of a spell or ability for the first time each turn, counter that spell or ability.
4 /
4
{1}{U}{U}
Kira, Great Glass-Spinner
Legendary Creature - Spirit
Flying
Creatures you control have "Whenever this creature becomes the target of a spell or ability for the first time each turn, counter that spell or ability."
2 /
2
{1}{U}{U}
Lullmage Mentor
Creature - Merfolk Wizard
Whenever a spell or ability you control counters a spell, you may create a 1/1 blue Merfolk creature token.
Tap seven untapped Merfolk you control: Counter target spell.
2 /
2
{5}{U}{U}
Mirrorshell Crab
Artifact Creature - Crab
Ward {3} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {3}.)
Channel -- {2}{U}, Discard Mirrorshell Crab: Counter target spell or ability unless its controller pays {3}.
5 /
7
{2}{U}{U}
Overcharged Amalgam
Creature - Zombie Horror
Flash
Flying
Exploit (When this creature enters the battlefield, you may sacrifice a creature.)
When Overcharged Amalgam exploits a creature, counter target spell, activated ability, or triggered ability.
3 /
3
{3}{U}
Shimmering Glasskite
Creature - Spirit
Flying
Whenever Shimmering Glasskite becomes the target of a spell or ability for the first time each turn, counter that spell or ability.
2 /
3
{1}
Sol Ring
Artifact
{T}: Add {C}{C}.
{4}
Solemn Simulacrum
Artifact Creature - Golem
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.
2 /
2
{3}
Sword of Feast and Famine
Artifact - Equipment
Equipped creature gets +2/+2 and has protection from black and from green.
Whenever equipped creature deals combat damage to a player, that player discards a card and you untap all lands you control.
Equip {2}
{3}
Sword of Hearth and Home
Artifact - Equipment
Equipped creature gets +2/+2 and has protection from green and from white.
Whenever equipped creature deals combat damage to a player, exile up to one target creature you own, then search your library for a basic land card. Put both cards onto the battlefield under your control, then shuffle.
Equip {2}
{4}
Thran Dynamo
Artifact
{T}: Add {C}{C}{C}.
{6}{U}
Tolarian Terror
Creature - Serpent
This spell costs {1} less to cast for each instant and sorcery card in your graveyard.
Ward {2} (Whenever this creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {2}.)
5 /
5
{3}{U}
Voidmage Husher
Creature - Human Wizard
Flash (You may cast this spell any time you could cast an instant.)
When Voidmage Husher enters the battlefield, counter target activated ability. (Mana abilities can't be targeted.)
Whenever you cast a spell, you may return Voidmage Husher to its owner's hand.