The Necromancer set is mostly a cosmetic set, however it does have some stats for magic attack and defence. The stats of this set are slightly worse than Infinity Robes. The advantage of this set is that it has no requirements to wear. The set is made up of:

Necromancer Hood
Necromancer Robe Top
Necromancer Robe Bottom

Obtaining Necromancer Set

You can buy Necromancer items from other players. You can also buy Necromancer from 'Daisies' the premium points store for 5k Premium points. You can obtain premium points through donating and getting vote streaks.