Illusion

Illusion is a creature type used for cards that depict incorporeal beings that are manifestations of pure thought and will, often aligned with blue mana. 
==Description==
As the existence of Illusions is often based on the manipulation of mind magic, their attributes are variable. As they are immaterial, some may be used to attack through an enemy's defenses. However, many are at such odds with reality, direct contact with the material world breaks their spell and causes them to vanish or be destroyed. This is seen in their "Illusion ability" (When ~ becomes the target of a spell or ability, sacrifice it). More recent Illusions are only vulnerable to spells, not to abilities.
The first creatures to bear the type were <c>Illusionary Presence</c> and <c>Illusionary Forces</c> in Ice Age, though the <c>Psionic Entity</c> from Legends was later issued errata to become an Illusion as well. More than sixty Illusions have been printed, so far. They typically have flying, shadow or some other kind of evasion. Where the illusion takes a clear inspiration, "illusion" acts like a class and it has another subtype, though many illusions are simply bizarre amalgamations that can't be described as anything else.
 This puts it into the shortlist of race/class types, alongside Zombie and Spirit.
==Notable Illusions==
==Trivia==
*<c>Phobian Phantasm</c>, <c>Glaze Fiend</c> and <c>Phantasmal Fiend</c> are the only mono black Illusions.
*<c>Illusory Demon</c> and Cromat are the only multicolored Illusions.
*The enchantment <c>Halcyon Glaze</c> can become an 4/4 Illusion creature with Flying
*The instant <c>Dance of the Skywise</c> changes creatures into 4/4 blue dragon illusions.
==Tokens==
==Creature Update==
In the Grand Creature Type Update the creature types Entity (<c>Psionic Entity</c>), Mistfolk (<c>Mistfolk</c>) and Phantasm (for example <c>Phantasmal Mount</c>) were changed into Illusion.
==References==