"Phantasmatical" is a word in ENGLISH

Same as Phantasm.

gaúng - Figment, chimera, fancy, phantasm, phantasy, creation or coinage of the brain, visionary project, building castles in the air; …

The work of the imagination or fancy; false ideas; imaginary phantasms.

An image formed by the mind, and supposed to be real or material; a shadowy or airy appearance; sometimes, an …

A mental image or representation of a real object; a fancy; a notion.

A phantasm.

Pertaining to, of the nature of, or resembling, a phantasm; spectral; illusive.

That which has only an apparent existence; an apparition; a specter; a phantasm; a sprite; an airy spirit; an ideal …

Phantasmal.