My mage has a lot of green and purple items in her bank and Terokk's Shadowstaff was a bit of both so I decided to be daring and mix the two colours together which resulted in this basic 'mog.
Head - N/A
Shoulders - N/A
Back - Clock of the Darkmoon Faire
Chest - O'Breen's Dress Robes
Wrists - N/A
Hands - Eldr'naan Gloves
Belt - N/A
Legs - N/A
Feet - Light-Woven Slippers
2H Staff - Terokk's Shadowstaff
She also has a selection of wands and off-hand items including some green and purple ones...
Head - Safety Goggles
Wand (green & glowy) - Wand of Oomph
Wand (purple) - Draenethyst Wand
Book (off-hand) - The Saga of Terokk