Prismatic Ooze/Zaishen Quest

Summary

 * Kill Prismatic Ooze  in the  Depths of Tyria.
 * *BONUS* Kill Prismatic Ooze in Hard Mode.

Dialogue
Kill 3 Prismatic Oozes in the Depths of Tyria.
 * Accept: "I can do that!"
 * Reject: "No, I'm way too busy today."