Nobody knows exactly how many shapeshifters there are. In my time, I have had the privilege to meet fifteen of these strange entities, these spacetwisters. They are, of course, best known for the agitation of the subreals, those tiny specks of truth that make up Reality, and all subordinate realities; but that agitation was nothing compared to my own, when I found out that fourteen of these shifters were in fact the same being. Perhaps it could be seen as flattering, that he stuck around in my reality for the best part of a human lifetime, devoting his energies solely to messing up my research. Alternatively, it could be seen as very, very irritating.
But the fifteenth shifter I met... I am sure that she is a separate entity. For a start, she is voluntarily female. She also doesn't have that slight haddock smell that I had always assumed was a hallmark of shapeshifters. Oh, and she can't shift shape. Or manipulate subreality. This could, perhaps, be seen as a slight obstacle for a shapeshifter, but as anyone who has seen their best friend sleepwalk into a meat-grinder knows (I lost 10 gold on that bet... never thought he'd do it), obstacles mean nothing when you're unconscious.
---
How are shapeshifters chosen? I'd love to tell you some mystical lore about duelling gods hand-picking warriors to do battle across the many bifurcations of Reality, but it's actually a pretty standard entrance exam. You might wonder, then, why shapeshifters are so few and far between. Well, the test is a spelling test. The problem comes when the new shapeshifters attempt to shift shape and find that they can't, usually dislocating some part of themselves in the process. The test itself is merely a clever way of disposing of the enormous collection of staples all shifters gradually accumulate for God-knows-what reason.
But for Meghghan Psquirrelstone (that's 'Meghghan' with a double-'gh' - say it as if you're choking on an otter) this was not a problem. Despite misspelling her own name on the test, she was by a wide margin the most successful shifter of her class of around four thousand, as she was the only one who could actually shift shape. She lived a fine life, hopping between realities, making the subreals dance for her - even spending some time in the Realm of Zeal, watching a new style of blood-sport which she dismissed as a silly fad that would never catch on. And it all would have gone on like this, as swimmingly as anything can be, if she had not got a little too lax with her abilities, and bitten off quite a lot more than she could chew.
Meghghan Psquirrelstone broke time.
We are, of course, already familiar with time's on-again-off-again relationship with Reality. In some realities, the two are all over each other; in others, Reality won't even give time the time of day (obviously). But there are some fundamental threads of time, even in those realities where it does not make its presence felt, and no shapeshifter must ever interfere with them - they are in the proverbial display case. And on the 14th day of the 3rd month of the 37th year of the reign of King Zühberbuhler of Grauundgrauundweiss, Meghghan Psquirellstone got her sticky lollipop-hands all over them.
Naturally, the shapeshifter examining body was pretty embarrassed about this, seeing as their failure to include pretty important information about how not to rip the fabric of time-space in their little spelling test could perhaps be blamed somewhat for this mishap, so they got to work fixing it. They toiled and toiled at it, but on the 14th day of the 3rd month of the 37th year of the reign of King Zühberbuhler of Grauundgrauundweiss, time was rebooted, to the immense relief of timeshare salesmen, whose customers were beginning to suspect that they were getting a raw deal. But time was already running out for Meghghan Psquirrelstone.
She fell. She fell hard. In fact, Psquirrelstone fell so spectacularly that the Americans named a season after it. Her shapeshifting powers were purged, and control over all subreals was wrenched from her - like a restraining order, but issued by human beings instead of lawyers. The revocation was so complete, she couldn't even make a mountain out of a molehill anymore.
Now, there are three main career paths for a fallen shapeshifter: after-dinner speaking (not an option, as due to her chronological oopsie, she and dinnertime were not exactly on speaking-terms), balloon modelling (she's scared of balloons), or becoming a dreamer. Anyone can shift shape in the Dream Realm, and in fact most people do: while dreams are technically Real, the subreals that compose them are notoriously gullible - some would say groggy - so even the ghastliest spellers can be shifters there. Trouble is, most people don't really notice their dreams, let alone control them. Fallen shifters, therefore, are ideal dreamers: they already know how to control every speck of truth and reality around them, and plus, they tend to be lazy beggars, so the extra sleep isn't a problem either.
Donning her purple-and-black hooded robe-cum-patchquilt, Meghghan Psquirrelstone made her way to the Dissensions tournament as the representative of Grauundgrauundweiss (they daren't send another toymaker, not after what happened to the last one). With her she carried her deadly tools of innate destruction: a vial of SandmanTM-quality sleep sand (eye gunk, technically); a ferocious goose-feather pillow; and a terrifying entity of all that is unholy, called Mister Fwuffums (a.k.a. the Teddy of Death).
The Dreamer is here... and she'll Rip you a new Van Winkle.