A'dal has tasked you with the recovery of the Top and Bottom Shards of the Arcatraz Key. Return them to him, and he will fashion them into the Key to the Arcatraz for you.
A message was embedded in the ata'mal crystal that you recovered. Nexus-Prince Haramad has given us information vital to our campaign against Tempest Keep.
He tells us that there are two pieces, shards to a key, which, when combined, will unlock the keep's Arcatraz satellite.
One half is possessed by an ancient in the Botanica known as Warp Splinter. The other is held by Pathaleon the Calculator inside the Mechanar.
Bring both shards to me and I will combine them into the Arcatraz key.