(2) Set: Increases the damage done by your Lightning Bolt spell by 5%.
(4) Set: Your Rolling Thunder ability now grants 2 Lightning Shield charges each time it triggers.
Firebird's Kilt is one of 5 pieces of Regalia of the Firebird, alongside Firebird's Shoulderwraps, Firebird's Headpiece and Firebird's Gloves and others. Bonuses activate at 2 pieces and 4 pieces equipped.
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Firebird's Kilt Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Firebird's Kilt suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Firebird's Kilt is part of the transmog set Regalia of the Firebird (Shaman only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Firebird's Kilt Fits
Other Items Named Firebird's Kilt
3 other items in the current build are also called Firebird's Kilt. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Blizzard numbers items as they are created, so the named items next to ID 85292 (85287 to 85297) were usually added in the same batch as Firebird's Kilt: the same quest line, zone, vendor or reward set.