phantasmagoria

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A fantastic sequence of haphazardly associative imagery, as seen in dreams or fever.
• noun A constantly changing scene composed of numerous elements.
• noun Fantastic imagery as represented in art.

from The Century Dictionary.

• noun A fantastic series or medley of illusive or terrifying figures or images.
• noun Specifically
• noun An exhibition of images or pictures by the agency of light and shadow, as by the magic lantern or the stereopticon; especially, such an exhibition so arranged by a combination of two lanterns or lenses that every view dissolves or merges gradually into the next.
• noun The apparatus by means of which such an exhibition is produced; a magic lantern or a stereopticon.

from the GNU version of the Collaborative International Dictionary of English.

• noun An optical effect produced by a magic lantern. The figures are painted in transparent colors, and all the rest of the glass is opaque black. The screen is between the spectators and the instrument, and the figures are often made to appear as in motion, or to merge into one another.
• noun The apparatus by which such an effect is produced.
• noun Fig.: A medley of figures; illusive images.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A popular 18th- and 19th-century form of theatre entertainment whereby ghostly apparitions are formed; a magic lantern.
• noun A series of events involving rapid changes in light intensity and colour.
• noun A dreamlike state where real and imagined elements are blurred together.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a constantly changing medley of real or imagined images (as in a dream)