Change the text of target spell or permanent by replacing all instances of one color word with another. (This effect lasts indefinitely.)
Flashback {1}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{1}{U}
Alter Reality
Instant
Change the text of target spell or permanent by replacing all instances of one color word with another. (This effect lasts indefinitely.)
Flashback {1}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
{3}{U}{U}{U}
Arcanis the Omnipotent
Legendary Creature - Wizard
{T}: Draw three cards.
{2}{U}{U}: Return Arcanis the Omnipotent to its owner's hand.
3 /
4
{2}{U}{U}
Archaeomancer
Creature - Human Wizard
When Archaeomancer enters the battlefield, return target instant or sorcery card from your graveyard to your hand.
1 /
2
{2}{U}{U}
Aven Smokeweaver
Creature - Bird Soldier
Flying, protection from red
2 /
3
{2}{U}{U}
Blind Seer
Legendary Creature - Human Wizard
{1}{U}: Target spell or permanent becomes the color of your choice until end of turn.
3 /
3
{U}
Blue Elemental Blast
Instant
Choose one --
• Counter target red spell.
• Destroy target red permanent.
{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
{3}{U}{U}
Cowardice
Enchantment
Whenever a creature becomes the target of a spell or ability, return that creature to its owner's hand. (It won't be affected by the spell or ability.)
{6}{U}
Dismiss into Dream
Enchantment
Each creature your opponents control is an Illusion in addition to its other types and has "When this creature becomes the target of a spell or ability, sacrifice it."
{2}
Distorting Lens
Artifact
{T}: Target permanent becomes the color of your choice until end of turn.
{2}{U}
Douse
Enchantment
{1}{U}: Counter target red spell.
{U}
Flash Flood
Instant
Choose one --
• Destroy target red permanent.
• Return target Mountain to its owner's hand.
{1}{U}
Flashfreeze
Instant
Counter target red or green spell.
{1}{U}
Flashfreeze
Instant
Counter target red or green spell.
{1}{U}
Gainsay
Instant
Counter target blue spell.
{1}{U}
Glamerdye
Instant
Change the text of target spell or permanent by replacing all instances of one color word with another.
Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.)
{5}{U}
Govern the Guildless
Sorcery
Gain control of target monocolored creature.
Forecast -- {1}{U}, Reveal Govern the Guildless from your hand: Target creature becomes the color or colors of your choice until end of turn. (Activate only during your upkeep and only once each turn.)
{3}
Heartstone
Artifact
Activated abilities of creatures cost {1} less to activate. This effect can't reduce the mana in that cost to less than one mana.
{U}
Hydroblast
Instant
Choose one --
• Counter target spell if it's red.
• Destroy target permanent if it's red.
{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.
{1}{U}
Jaded Response
Instant
Counter target spell if it shares a color with a creature you control.
{U}
Mind Bend
Instant
Change the text of target permanent by replacing all instances of one color word with another or one basic land type with another. (For example, you may change "nonblack creature" to "nongreen creature" or "forestwalk" to "islandwalk." This effect lasts indefinitely.)
{U}
Mind Harness
Enchantment - Aura
Enchant red or green creature
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.)
You control enchanted creature.
{U}
Riptide
Instant
Tap all blue creatures.
{2}
Sanctuary Blade
Artifact - Equipment
As Sanctuary Blade becomes attached to a creature, choose a color.
Equipped creature gets +2/+0 and has protection from the last chosen color.
Equip {3}
{3}
Scuttlemutt
Artifact Creature - Scarecrow
{T}: Add one mana of any color.
{T}: Target creature becomes the color or colors of your choice until end of turn.
2 /
2
{2}{U}
Shifting Sky
Enchantment
As Shifting Sky enters the battlefield, choose a color.
All nonland permanents are the chosen color.
{U}
Sleight of Mind
Instant
Change the text of target spell or permanent by replacing all instances of one color word with another. (For example, you may change "target black spell" to "target blue spell." This effect lasts indefinitely.)
{1}{U}
Sway of Illusion
Instant
Any number of target creatures become the color of your choice until end of turn.
Draw a card.
{2}{U}{U}
Talrand, Sky Summoner
Legendary Creature - Merfolk Wizard
Whenever you cast an instant or sorcery spell, create a 2/2 blue Drake creature token with flying.
2 /
2
{1}{U}{U}
Tidal Control
Enchantment
Cumulative upkeep {2} (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.)
Pay 2 life or {2}: Counter target red or green spell. Any player may activate this ability.
{U}
Tidal Visionary
Creature - Merfolk Wizard
{T}: Target creature becomes the color of your choice until end of turn.
1 /
1
{U}
Training Grounds
Enchantment
Activated abilities of creatures you control cost {2} less to activate. This effect can't reduce the mana in that cost to less than one mana.
{U}
Training Grounds
Enchantment
Activated abilities of creatures you control cost {2} less to activate. This effect can't reduce the mana in that cost to less than one mana.
{2}{U}{U}
Treetop Sentinel
Creature - Bird Soldier
Flying, protection from green
2 /
3
{3}{U}
Wash Out
Sorcery
Return all permanents of the color of your choice to their owners' hands.
{3}{U}{U}
Willbreaker
Creature - Human Wizard
Whenever a creature an opponent controls becomes the target of a spell or ability you control, gain control of that creature for as long as you control Willbreaker.