A suit of armour wakes up in the woods from a very long nap and has some issues. These involve some less than stable quadrupeds called ponies and one very specific one which we shall refer to as Luna.

Cover art from: https://www.artstation.com/andrewdoma

Featured basically whenever there's an update. Not sure as to why.

"Learning to trust your instincts is a valuable lesson to learn."

Mere months after the events of "A Canterlot Wedding," the memories of cold shoulders and dismissals remain fresh in Twilight Sparkle's mind, which causes her to question her ability to face the next task that Princess Celestia bestows upon her.

Alone, she must find a way to protect an entire empire. She's afraid and unprepared, but when a mysterious stallion lends a hoof to her success, she soon discovers a friendship that threatens to blossom into something much greater.

(6/9/2016): Made it to the "Featured" page again! You're so awesome, guys!

(( "Of Magic and Masquerades" is the first story in the Crucibles of Harmony series. It is an alternate take on "The Crystal Empire," with some alternate events from Season 3 and minor Twilight/Sombra shipping. ))

Rainbow Dash's morning was pretty much ruined.
She tripped getting out of bed and landed flat on her face, giving herself an aching muzzle.
She forgot to buy her favorite brand of hay flakes at the store yesterday and had to eat plain toast for breakfast.
She found out she had to pull double-duty today and tomorrow on the weather patrol.
Oh, and she found a nearly-dead foal, broken and bleeding at the edge of Ponyville.

The rest of her day became a whirlpool of stress and worry but the colt woke up, thank Celestia.
Something's not right, though. Nopony can find his parents, he's not in the registers, and there's an unsettling look in his eye...

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YouTube reading by Fire Hearth

Chinese Translation by forgivenlove

Russian Translation by Likantrop

TV Tropes page, if you're interested in that sort of thing.

Idol Hooves holds a special place in Equestria. He's probably the only exiled changeling to serve in the Royal Guard, or at least, that's what he expects, as exiles don't really broadcast that fact. However, it's well known that Princess Celestia loves all of her little ponies, and her guards perhaps more so, and that makes it one of the best ways for a changeling to discreetly feed.

But how does a changeling even get there, let alone get exiled in the first place? For that matter, why would it ever go to Canterlot? Set a number of years before the series proper, before Luna’s redemption, Idol details how he was exiled, the ponies he’s met, and the series of misadventures that led him to joining the Royal Guard, and should continue a good ways into the series, as something of an alternate perspective.

Soon, he’ll have to deal with a boisterous new princess to serve and a royal wedding in the works bringing a third to power. Will his old instincts bring this new life crashing down around him? What precipitates Chrysalis’s ill-fated assault on Canterlot? Is it really so wrong for a changeling to enjoy good craftsmanship to an obsessive degree?

New cover art provided by the fantastic Carnifex

And a TVTropes page here.

And an Ask Blog of questionable canonity!
Out of Idol Curiosity

Fanart by Norad2! Major thanks! Short For a Royal Guard

Art by Egophiliac of Idol and his Daring Duckie Please don't tell him what that brush is meant for.

Rating updated to (T), it's a bit darker than (E)
Comedy Tag added as well
And changed the character tags a bit.