Crawling Claw - An epic reward from Tol'vir archaeology, it shows up in your archaeology tab as "Mummified Monkey Paw." With a level 90 character with maxed (600) Archaeology, the best way to work toward this reward is to complete Mogu and Pandaren digsites in Pandaria and then trade
Restored Artifacts to Brann Bronzebeard for
Crate of Tol'vir Archaeology Fragments. These crates will contain five to thirteen Tol'vir fragments and occasionally even a
Tol'vir Hieroglyphic!
(Note: You may also work toward the reward through standard Tol'vir archaeology; however, it will take much longer to finish each artifact as you will be forced to complete non-Tol'vir sites along the way. If you prefer this method, you will only need 450 Archaeology, so you may choose to start earlier!)
In pet battles, the Claw excels at disrupting your opponent's strategy by introducing the randomness of
Death Grip! Are they setting up for a mega attack or a much-needed heal? Simply yank one of their pets out from the back row instead! You can almost hear their cursing and complaining from here! To swing things even further in your favor, make sure to load them up with your
Agony and
Curse of Doom DoTs before you make the switch. (Remember that they'll still continue to take damage, even when they're not active!)
If you prefer not to use Death Grip,
Ancient Blessing is a powerful alternative. Put up your DoTs and then time your self-heal carefully (or use it on cooldown) to keep your Claw alive while you watch your enemy die slowly and painfully. The added maximum health for your whole team is just a bonus.
Note: While
Dark Simulacrum sounds like it could be a fun toy, I'd avoid it. In it's current form, it is notoriously buggy.