Phantasmal Bear

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

Jace's Phantasm

Flying
Jace's Phantasm gets +4/+4 as long as an opponent has ten or more cards in their graveyard.

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."

Disperse

Return target nonland permanent to its owner's hand.

Ice Cage

Enchant creature
Enchanted creature can't attack or block, and its activated abilities can't be activated.
When enchanted creature becomes the target of a spell or ability, destroy Ice Cage.

Psionic Blast

Psionic Blast deals 4 damage to any target and 2 damage to you.

Krovikan Mist

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

Phantom Warrior

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.)

Vapor Snag

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

Illusory Angel

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

Counterspell

Unsummon

Return target creature to its owner's hand.

Island

Summoner's Bane

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

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.

Phantom Beast

When Phantom Beast becomes the target of a spell or ability, sacrifice it.

Phantasmal Dragon

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

Monastery Siege

As Monastery Siege enters, choose Khans or Dragons.
• Khans — At the beginning of your draw step, draw an additional card, then discard a card.
• Dragons — Spells your opponents cast that target you or a permanent you control cost {2} more to cast.

Frost Breath

Tap up to two target creatures. Those creatures don't untap during their controller's next untap step.