Vanquished Tentacle of C'Thun is a trinket that summons a tentacle to your aid.
The estimated droprate is 15%.
The item summons a level 60 Vanquished Tentacle to fight for you for 30 seconds. The tentacle has 6104 health, is immobile, and melees enemies that it is in attack range of.
Patches and hotfixes
Patch 1.9.0 (03-Jan-2006): Added