Wizard Eyes

Wizard Eyes is one of the Ice King's powers. It is likely that the hallucinations were a side effect of wearing the Ice King's Crown. It was shown first in "Mortal Recoil." Ice King can see strange things that happen that most others can't. He can see strange beasts (this could be the trade-off of becoming a wizard) or a curse. But his Wizard Eyes make him see weird things (hallucinations) all the time, making it hard for him to distinguish strange things that actually happen and things only his eyes see. In "Holly Jolly Secrets Part II," Simon Petrikov (Ice King) first put on the crown jokingly to show Betty, his fiance, but blacked out. The crown controls the eyes and what they see.

Notable Things Seen

 * A shapeless form coming from The Lich going into Princess Bubblegum's body.
 * Odd looking monsters flying or walking around and other peculiar things.

Trivia

 * So far, Ice King is the only known wizard shown that has this power.
 * In "Mortal Recoil," when the Ice King is talking abut his Wizard Eyes, the audience sees everything through his eyes. This is the one time this has happened in this show.
 * It is possible that those odd things seen through Ice King's eyes are really paranormal creatures that actually exist, but they are so insane that Ice King couldn't comprehend that they are anything more than illusions.
 * Adam Muto suggested, but did not confirm that it may be Charles Bonnet syndrome.
 * In the episode "Holly Jolly Secrets Part II," Ice King revealed that his crown is the source of his Wizard Eyes.
 * The Witch from "The Witches Garden" may have Wizard Eyes, or a variation of it because she could see Jake's Subconscious when Finn couldn't.
 * The monsters are like monsters from a French movie Fantasic Planet.