Arcanist Leggings
Binds when picked up
LegsCloth
101 Armor
+23 Intellect
+10 Spirit
+18 Stamina
+10 Shadow Resistance
Classes: Mage
Requires Level 60
Equip: Increases your spell critical strike rating by 14. 
Equip: Increases damage and healing done by magical spells and effects by up to 20. 

Arcanist Regalia
3 pieces: Increases damage and healing done by magical spells and effects by up to 18.
5 pieces: Increases your spell penetration by 38.
8 pieces: Decreases the threat generated by your spells by 15%.
Item display is courtesy wow.allakhazam.com.