It consists of a Disicple's Hat, Disicple's Robe and Disicple's Pants.
The Disicple's Hat gives 2 defense and 3% increased magic damage; the Disicple's Robe gives 3 defense and 3% increased magic damage; and the Disicple's Pants gives 2 defense and 3% increased magic damage.
A full set provides a total of 7 defense, and 9% increased magic damage. Its set bonus increases your maximum mana by by 10 increased magic critical strike chance by 6%.