Mage Class can follow the guide below to obtain your Frostfire Regalia WOW Classic tier 3 armor set. And the pieces equipped can gain you some bonuses. 

Frostfire Regalia WOW Classic Mage armor set with bonuses 

Frostfire Regalia is the tier 3 armor set for Mage Class in WOW Classic, including 9 pieces: 
Frostfire Sandals (boots) 
Frostfire Belt
Frostfire Gloves
Frostfire Circlet (helm) 
Frostfire Leggings
Frostfire Shoulderpads
Frostfire Robe (chest)
Frostfire Bindings (bracer)
Frostfire Ring 
While wearing Frostfire Regalia armor, you will receive some bonuses, like: 
2 pieces: reducing cooldown on your Evocation by 1 minute. 
4 pieces: receiving a chance to increase resistance against that school of magic by 35 for 30 seconds when struck by a harmful spell. 
6 pieces: giving your damage spells a chance to make your target take up to 200 increased damage from subsequent spells. 
8 pieces: giving your damage spells a chance to displace you in order to make next spell generate no threat. 

Methods to obtain WOW Classic Frostfire Regalia tier 3 armor

To get Mage Frostfire Regalia armor set, you have to complete Echoes of War quest first to unlock the ability of crafting set pieces. After that, you can collect Desecrated tokens and complete specific quests to claim the nine pieces: 
1. Frostfire Sandals 
Items for quest: Desecrated Sandals, 12 Wartorn Cloth Scrap, 2 Mooncloth, 3 Cured Rugged Hide. 
Token sources: Instructor Razuvious, Gothik the Harvester, Gluth.
2. Frostfire Belt
Items for quest: Desecrated Belt, 8 Wartorn Cloth Scrap, 2 Arcane Crystal, 2 Mooncloth.
Token sources: Noth the Plaguebringer, Heigan the Unclean, Gluth.
3. Frostfire Gloves
Items for quest: Desecrated Gloves, 8 Wartorn Cloth Scrap, 4 Mooncloth.
Token sources: Maexxna
4. Frostfire Circlet 
Items for quest: Desecrated Circlet,15 Wartorn Cloth Scrap, 3 Mooncloth, 3 Nexus Crystal.
Token sources: Thaddius
5. Frostfire Leggings
Items for quest: Desecrated Leggings, 20 Wartorn Cloth Scrap, 4 Mooncloth, 2 Nexus Crystal.
Token sources: Loatheb
6. Frostfire Shoulderpads
Items for quest: Desecrated Shoulderpads, 12 Wartorn Cloth Scrap, 2 Mooncloth, 3 Cured Rugged Hide.
Token sources: Grobbulus, Patchwerk, Gluth. 
7. Frostfire Robe 
Items for quest: Desecrated Robe, 25 Wartorn Cloth Scrap, 4 Mooncloth, 2 Nexus Crystal. 
Token sources: Four Horsemen Chest
8. Frostfire Bindings 
Items for quest: Desecrated Bindings, 6 Wartorn Cloth Scrap, Arcane Crystal, Nexus Crystal. 
Token sources: Grand Widow Faerlina, Anub'Rekhan, Gluth. 
9. Frostfire Ring (direct drop)
Token sources: Kel'Thuzad 

Get Frostfire Regalia WOW Classic Mage tier 3 armor set with the guide now. Besides, don't forget to claim free WOW Classic gold from our flash sale at 3:00 a.m. GMT on Feb. 3.  

The WOWClassicGP Team