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.)

Grand Architect

Other blue creatures you control get +1/+1.
{U}: Target artifact creature becomes blue until end of turn.
Tap an untapped blue creature you control: Add {C}{C}. Spend this mana only to cast artifact spells or activate abilities of artifacts.

Tormod's Crypt

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

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 Dragon

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

Negate

Spell Pierce

Counter target noncreature spell unless its controller pays {2}.

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.

Dispel

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."

Serum Visions

Annul

Counter target artifact or enchantment spell.

Illusory Angel

Cast this spell only if you've cast another spell this turn.
Flying

Island

Anticipate

Look at the top three cards of your library. Put one of them into your hand and the rest on the bottom of your library in any order.