Tag Aliases - Read the first page before suggesting.

technical advanced -> technically advanced  
Obvious typo in the former, the latter doesn’t seem to turn up anything.

mario bros -> super mario bros.

blackboard (72) -> chalkboard (211)

@barbeque  
I believe Crenair is the original. Sounds better than Xaztein anyway.

@Grieffon  
Actually, by looking through his old deviations (go to old pics -> right-click the preview image -> View Image -> pay attention to the filename) it would be artist:cresento:  
April 2012: http://cerraka.deviantart.com/art/Super-Rainbow-Dash-296206154 (cresento)  
November 2012: http://cerraka.deviantart.com/art/Hearth-s-Warming-Eve-340031122 (crenair)  
May 2013: http://cerraka.deviantart.com/art/Let-s-build-a-castle-in-the-clouds-374209606 (xaztein)
 
So yeah, you were right. Also apparently he does have a facebook with Crenair, and now that you mention it I do recall having both a crenair folder as well as a xaztein folder in my archive at some point, before I discovered they were the same and deleted (in hindsight) the wrong one. Not that I mind to which it gets aliased next time really, as long as it’s one of his old names and we shall use it FOREVER  
^{inb4 someone reports artist:cresento -> artist:whateverhisnewnamewasiforgotitalready. CALLING IT}

@barbeque  
Don’t worry, dA only allows you to change name once every 6 months.

@5hyflutter  
Telekinesis is one effect of magic therefore telekinesis should imply magic, not be aliased to it.

artist:naughtystingray → artist:stingray970
 
Naughtystingray is the name of his tumblr, stingray970 is the artist.

Per >>586618, I recommend:  
twicane –> twilight scepter  
twilicane –> twilight scepter

@Masem  
Shouldn’t they alias to The Twilicane or Twilicane, since the card establishes its name as such?

@Rainbow Dude  
The CCG game is not 100% canon, and we’ve been using Twilight Scepter since day one, so it is simpler to use that. If the show came back around and called it Twilicane, then yeah, then I’d flip it around.

artist:neko -> artist:mcsadat
 
mcsadat = da  
neko :3 = pixiv (da is linked in pixiv profile)  
nekocolonthree = tumblr

artist:dylanweaver (deviantArt)  
artist:weaverdesigns (also is his name on Derpi, perhaps one could PM him asking which he prefers?)

@5hyflutter  

*Looks at the tag changes*  
*Looks at the actual content of the tags*  
So, any particular reason why this shouldn’t just get aliased to monochrome instead?

@barbeque  
Some are sketches.  
Some are sharp linearts that scream “color me!”.  
Take Joey Darkmeat or Obvious Decoy, for example.

t-rex -> tyrannosaurus rex

Project Horizons  
and  
Fallout Equestria: Project Horizons
 
Are used for the exact same kind of content, and they are basically synonymous.  
Perhaps have the tag be “Fallout Equestria: Project Horizons” with “Project Horizons” aliasing to it, and imply “Fallout Equestria”?

artist:dogz777 <=> artist:smilingdogz (DA namechange)

cheongsam (37) <=> qipao (22)  
Wikipedia

swimwear (1) → swimsuit (1191)

unusual unicorn (38) -> stompy slippers (54)

highres (97)  
high res (36)  
hi res (31)  
high resolution (6)  
hires (1)

artist:edwin -> artist:my-magic-dream
 
edwin = pixiv  
my-magic-dream = da

@Background Pony  
I’d suggest aliasing all of those to “high resolution”, following the usual pattern of “abbreviation goes to full”.