Quest:Warlord Krellian

Warlord Krellian is the first step in a mage-only quest line to obtain the spell Polymorph: Pig. This rank of Polymorph is mechanically the same as Polymorph (Rank 4) except the target is transformed into a pig instead of a sheep.

Objectives
Retrieve the Prismatic Shell for Archmage Xylem. The Archmage resides in a tower atop the cliffs of Azshara.
 * Prismatic Shell

Description
There isn't much time ! My scrying spells have revealed a powerful source of magic. I cannot leave the tower, and would ask you to kill the vile creature in possession of this artifact.

The pathetic little cretin is known as Warlord Krellian, hiding behind his guards in the temple of Temple of Zin-Malor. Burn him to ashes and take the Prismatic shell he covets so dearly.

Progress
There is not time to waste! Have you the shell?

Completion
I must say, this shell has a strange aura. It seems only fitting that part of your reward for retrieving it would be to test its magical capabilities...