WoW Transmog — Browse All Transmog Sets
Browse all 3,100+ World of Warcraft transmog appearance sets. Filter by expansion, armor type (Cloth, Leather, Mail, Plate, Cosmetic), and PvP sets. Track your wardrobe completion across all expansions.
Browse transmog sets from raids, dungeons, PvP, and quests across all expansions. Filter by armor type (plate, mail, leather, cloth) and source. Track which appearances you own and which you still need via Battle.net sync.
Tranquil Spiritbind Regalia
Cloth set. Wrath of the Lich King. Somewhere in the infinity of Time and Space, there is a pantsless Time Traveler running amok! So this is what the Infinite Dragonflight was trying ...
The Tranquil Spiritbind Regalia is a cloth transmog set oriented toward healers (featuring Spirit) that drops from bosses inside the End Time dungeon.
Enter End Time Dungeon
Travel to End Time and defeat Echo of Baine, Echo of Jaina, Echo of Tyrande, and Echo of Sylvanas — all four bosses have a chance to drop pieces of the Tranquil Spiritbind Regalia.
Buy Leggings as Backup
If the 
Time Traveler's Leggings refuse to drop after many runs, purchase the matching leggings from your Justice Quartermaster as a near-identical stat alternative to fill the slot while you continue farming.
Tips
The leggings in particular have a notably low drop rate, so running End Time on every weekly lockout reset is the most efficient way to farm the full set.