In The Burning Crusade it is item level 128, requires level 70 and sells to vendors for 2g 62s 16c. In Wrath of the Lich King it is item level 226, requires level 80 and sells to vendors for 2g 62s 16c. In MoP Classic it is item level 128, requires level 70 and sells to vendors for 2g 62s 16c.
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Mindstorm Wristbands Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Mindstorm Wristbands suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Transmog Sets
Mindstorm Wristbands is part of the transmog set Tirisfal Regalia (Mage only). The other 8 pieces:
Blizzard numbers items as they are created, so the named items next to ID 29918 (29913 to 29923) were usually added in the same batch as Mindstorm Wristbands: the same quest line, zone, vendor or reward set.