Ravenform

Exile target artifact or creature. Its controller creates a 1/1 blue Bird creature token with flying.
Foretell {U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)

Dampen Thought

Target player mills four cards.
Splice onto Arcane {1}{U} (As you cast an Arcane spell, you may reveal this card from your hand and pay its splice cost. If you do, add this card's effects to that spell.)

Vedalken Entrancer

Relic of Progenitus

{T}: Target player exiles a card from their graveyard.
{1}, Exile Relic of Progenitus: Exile all graveyards. Draw a card.

Hermetic Study

Enchant creature
Enchanted creature has "{T}: This creature deals 1 damage to any target."

Compelling Argument

Target player mills five cards.
Cycling {U} ({U}, Discard this card: Draw a card.)

Cathartic Adept

Evanescent Intellect

Enchant creature
Enchanted creature has "{1}{U}, {T}: Target player mills three cards."

Disruptive Pitmage

{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.)

Scuttlemutt

{T}: Add one mana of any color.
{T}: Target creature becomes the color or colors of your choice until end of turn.

Viridian Longbow

Equipped creature has "{T}: This creature deals 1 damage to any target."
Equip {3} ({3}: Attach to target creature you control. Equip only as a sorcery. This card enters unattached and stays on the battlefield if the creature leaves.)

Rootwater Hunter

{T}: Rootwater Hunter deals 1 damage to any target.

Glasses of Urza

Screeching Sliver

All Slivers have "{T}: Target player mills a card."

Iceberg Cancrix

Whenever another snow permanent you control enters, you may have target player mill two cards.

Thought Collapse

Counter target spell. Its controller mills three cards.

Mind Sculpt

Prodigal Sorcerer

{T}: Prodigal Sorcerer deals 1 damage to any target.

Preordain

Scry 2, then draw a card. (To scry 2, look at the top two cards of your library, then put any number of them on the bottom and the rest on top in any order.)

Vessel of Endless Rest

When Vessel of Endless Rest enters, put target card from a graveyard on the bottom of its owner's library.
{T}: Add one mana of any color.

Counterspell

Negate

Dream Twist

Target player mills three cards.
Flashback {1}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Sage's Row Denizen

Whenever another blue creature you control enters, target player mills two cards.

Sleeper Dart

When Sleeper Dart enters, draw a card.
{T}, Sacrifice Sleeper Dart: Target creature doesn't untap during its controller's next untap step.

Deepmuck Desperado

Whenever you commit a crime, each opponent mills three cards. This ability triggers only once each turn. (Targeting opponents, anything they control, and/or cards in their graveyards is a crime.)

Abjure

As an additional cost to cast this spell, sacrifice a blue permanent.
Counter target spell.

Sunscorched Desert

When Sunscorched Desert enters, it deals 1 damage to target player or planeswalker.
{T}: Add {C}.

Disruptive Student

{T}: Counter target spell unless its controller pays {1}.

Serum Visions

Merfolk Thaumaturgist

{T}: Switch target creature's power and toughness until end of turn.

Thornwind Faeries

Flying
{T}: Thornwind Faeries deals 1 damage to any target.

Peek

Look at target player's hand.
Draw a card.

Didn't Say Please

Drowner Initiate

Whenever a player casts a blue spell, you may pay {1}. If you do, target player mills two cards.