Crystal Terror
Objectives
In the northeast room of the Twilight Temple Act III: Aria of Dawn on the highest difficulty, you must defeat all the monsters to access the summonobot. Then you will see the Crystal Terror. Caution: If you trashed this quest, even if you defeated Crystal Terror, you still won't be able to get the signature.
Quest stages
Conversations
The Crystal Terror lives in the Twilight Temple, but he's never socialized with anyone there. In the northeast room of the Hall of Twilight, defeat all the monsters to access the summonobot. Give the summonobot the summon note and you will see the Crystal Terror.
Understood. It's show time!