Some expansions have ’em, some expansions don’t, and I’ve only collected the ones that I like.
I acquired almost all of these items during Legion, when the PvP-focused World Quests awarded account-bound Marks of Honor that could be used to purchase past-season PvP gear — and certain Order Halls had an upgrade that allowed one WQ per day to be instantly completed.
Some of the pieces I’ve acquired, I’ve Mogged with; others, I haven’t yet.
Mage PvP gear that IS a recolor of a Raid set will be posted with the corresponding Raid set, naturally.
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Classic
Knight-Captain’s Silk Tunic, Field Marshal’s Silk Vestments
Kinevra bought these robes with Honor gained by doing Wintergrasp while she was leveling; as she does not have the requisite Classic-era PvP Title, she cannot truly Mog with these robes, but must equip them.
Knight-Captain of the 7th Legion
Mountainsage Hood, Mantle of the Champion, Knight-Captain’s Silk Tunic, 7th Legionnaire’s Cord, Warmongering Gladiator’s Gloves of Prowess, Sandswept Sandals, 7th Legionnaire’s Stave
Tirisgarde Field Marshal
Ceremonial Crown of Karabor, Vestia’s Pauldrons of Inner Grace, Field Marshal’s Silk Vestments, Light-Woven Slippers, Aluneth
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Wrath of the Lich King
Hateful Gladiator’s Silk Amice, Savage Gladiator’s Silk Amice
Deadly Gladiator’s Silk Amice, Furious Gladiator’s Silk Amice, Relentless Gladiator’s Silk Amice, Wrathful Gladiator’s Silk Amice (with matching robes obtained from the same sources)
Weald Wanderer
Shadowbrim Travel Hat, Hateful Gladiator’s Silk Amice, Blue Overalls, Willow Belt, Elder’s Gloves & Boots, Green Workman’s Shirt, Faewoven Pack, Meadow Guardian’s Staff
Zen Trial Style: Pink
Deadly Gladiator’s Silk Amice, Dusklight Drape, Silkwood Robe, Silkwood Cord, Initiate’s Necromantle Slippers, Rain Poppy Staff
Miss Muriel II
Hat of the Third Sister, Deadly Gladiator’s Silk Amice, Fire-Gizzard Robes, Stitched Cord, Soulbreaker’s Court Slippers, Abracadaver
Wrathful Moonpriest
Ceremonial Crown of Karabor, Wrathful Gladiator’s Silk Amice, Imbued Netherweave Tunic, Felcast Cord, Moonpriest’s Legwraps, Sunfrost Handwraps, Inferno Breath Sandals, Moonpriest’s Cloak, Steel Bladebreaker, Urn of Lost Memories
Effervescent Night
Crown of Everlasting Fortune, Wrathful Gladiator’s Silk Amice, Robe of Effervescent Light, Belt of Arcane Storms (N), Tempest’s Touch, Slippers of the Twilight Prophet, Night Courtier’s Bulb, Viridium Staff of Alacrity
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Cataclysm
Cataclysmic Gladiator’s Silk Armor
Alodi’s Heir
Cataclysmic Gladiator’s Silk Armor with Brutal Gladiator’s Silk Cowl, Black Swashbuckler’s Shirt, and Ebonchill (upgraded, first tint)
When I finally figured out that this set is what Alodi and Archmage Karlain (in the Elite recolor) are wearing, then I had to get it. It needed a less complicated hat, though.
Shadowfrost
Crown of Eternal Winter, Frostwind Mantle, Cataclysmic Gladiator’s Silk Robe, Deckhand’s Rope Belt (N), Primal Combatant’s Gloves of Prowess, Hu’rala’s Slippers, Wild Combatant’s Energy Staff
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Mists of Pandaria
Crafted Dreadful Gladiator’s Silk Amice, Crafted Malevolent Gladiator’s Silk Amice
Akolik’s Ardor
Helm of Arcane Purity, Crafted Dreadful Gladiator’s Silk Amice, Akolik’s Acid-Soaked Robes (LFR), Kurkenstoks, Fandral’s Flamescythe (H)
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Warlords of Draenor
Horde Primal Combatant, Alliance Primal Combatant
Horde Primal Gladiator’s Silk Amice, Alliance Primal Gladiator’s Silk Amice
Scarlet Sunreaver Battlemage
Primal Combatant’s Amice Cord & Gloves of Prowess, Cindercloth Vest, Felheart Pants, Sorcerer Slippers, Scarlet Filigreed Doublet, Staff of the Forest Lord, Sunreaver Tabard
Dreamscale Inlay
Demonic Gladiator’s Satin Hood, Primal Combatant’s Amice of Prowess, Dreamscale Inlaid Vestments (LFR), Girdle of Prophecy, Warmongering Gladiator’s Satin Gloves, Warm Red Woolen Socks, Rubellite Staff of Intuition
Dreamscale II
Starfire Tiara*, Primal Combatant’s Amice of Prowess, Dreamscale Inlaid Vestments, Primal Combatant’s Cord of Prowess, Exiled Dabbler’s Gloves, Infernoweave Boots, Rubellite Staff of Intuition
Kamalia et alia 
Okay, the Dragonblight pic made me laugh, because the wonders of optical illusion makes you look not that much smaller than Azshandra and her Consort. But as we all know, their actual size is something closer to about 20 feet tall.
I do really like Dreamscale II, with or without a headpiece, because it fits Silvermoon so well. (Well, so does the Scarlet Sunreaver set…)
Finding just the right spot to best relatively scale foreground and background can be quite the trick!
I think the High Elves who stayed Alliance must have been the ones to switch from using red in their livery to using blue, instead of Silvermoon switching, in a time of tragedy and reduced resources, from blue to red!
Oh crap, I actually wrote Az’s name instead of Alexstraza! Well, she is a legend in her own mind, so it kind of figures.
LOL!
As always, lovely and I spend so much time trying to guess some of the locations. I feel like I should print out some of these and fly around the world trying to see if I’m right about where they are!
Photo/selfie scavenger hunt, go! đŸ˜€