(4) Set: Increases the damage done by your Arcane Blast, Fireball, Frostbolt, Scorch, Pyroblast, Arcane Missiles, and Frostfire Bolt spells by 5%.
Gladiator's Silk Trousers is one of 5 pieces of Gladiator's Regalia, alongside Gladiator's Silk Amice, Gladiator's Silk Cowl and Gladiator's Silk Handguards and others. Bonuses activate at 4 pieces equipped.
In The Burning Crusade it is item level 123 and requires level 70. In Wrath of the Lich King it is item level 123, requires level 70 and sells to vendors for 1c. In MoP Classic it is item level 123, requires level 70 and sells to vendors for 1c.
Read from the World of Warcraft client build files.
How Gladiator's Silk Trousers Compares
Who It Suits
Cloth is the armor type Mage, Priest and Warlock wear. With Intellect, Gladiator's Silk Trousers suits Discipline, Holy and Shadow Priest; Arcane, Fire and Frost Mage; Affliction, Demonology and Destruction Warlock.
Transmog Sets
Gladiator's Silk Trousers is part of the transmog set Gladiator's Silk Armor (Mage only). The other 9 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Gladiator's Silk Trousers Fits
Other Items Named Gladiator's Silk Trousers
4 other items in the current build are also called Gladiator's Silk Trousers. 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 25858 (25853 to 25865) were usually added in the same batch as Gladiator's Silk Trousers: the same quest line, zone, vendor or reward set.