Burning Within
Burning Within is a quest for level 45. It is step 2 of 5 in the Class Mount: Mage storyline. It rewards 6,150 experience and money.
Description
The first piece he spoke of was that of fire. He imbued it while investigating the entrance to the Molten Core.
However, the power surging through it was too great to control, so he asked Khadgar to take it to Karazhan and see if there were any books on the subject of controlling fire.
Perhaps you should speak with Khadgar and find out what became of the disc.

