Aether Gust

Choose target spell or permanent that's red or green. Its owner puts it on the top or bottom of their library.

Vapor Snag

Return target creature to its owner's hand. Its controller loses 1 life.

Phantasmal Bear

When Phantasmal Bear becomes the target of a spell or ability, sacrifice it.

Negate

Island

Krovikan Mist

Flying
Krovikan Mist's power and toughness are each equal to the number of Illusions on the battlefield.

Mana Leak

Counter target spell unless its controller pays {3}.

Phantasmal Image

You may have Phantasmal Image enter as a copy of any creature on the battlefield, except it's an Illusion in addition to its other types and it has "When this creature becomes the target of a spell or ability, sacrifice it."

Lord of the Unreal

Illusion creatures you control get +1/+1 and have hexproof. (They can't be the targets of spells or abilities your opponents control.)

Disdainful Stroke

Counter target spell with mana value 4 or greater.

Tormod's Crypt

{T}, Sacrifice Tormod's Crypt: Exile target player's graveyard.

Castle Vantress

Castle Vantress enters tapped unless you control an Island.
{T}: Add {U}.
{2}{U}{U}, {T}: Scry 2.

Jace, Cunning Castaway

+1: Whenever one or more creatures you control deal combat damage to a player this turn, draw a card, then discard a card.
−2: Create a 2/2 blue Illusion creature token with "When this creature becomes the target of a spell, sacrifice it."
−5: Create two tokens that are copies of Jace, Cunning Castaway, except they're not legendary.

Mystical Dispute

This spell costs {2} less to cast if it targets a blue spell.
Counter target spell unless its controller pays {3}.

Halcyon Glaze

Whenever you cast a creature spell, Halcyon Glaze becomes a 4/4 Illusion creature with flying in addition to its other types until end of turn.

Summoner's Bane

Counter target creature spell. Create a 2/2 blue Illusion creature token.

Distant Melody

Choose a creature type. Draw a card for each permanent you control of that type.