Speak to Apprentice Meledor in Eversong Woods along the road heading south from Silvermoon City.
You, there! You must help me, please!
A fellow apprentice and I were attacked by the Wretched! In their mad hunger for magic, they took everything they could get their hands on: mana crystals, wands, spellbooks... everything!
Meledor gave chase after them; I had to stay behind and look after what they didn't take. Continue down the road and see if you can lend him a hand.