Took him down last night with 67 BST / 67 Chanter / 68 Ranger + Tank / Tank / Cleric Mercs.
He has an AE spell that launches you in the air and stuns you when you hit the ground along with doing 1.3K damage. +1 to the folks saying he is hard to pull.....very difficult to get back to camp. Suggest using a long range bow at max range and then running like crazy.
Once he is pulled, the fight is not bad, he cast the AE launch spell about 3 times, which is annoying but not too much of a problem. The J1 tank merc handled the DPS with no problem.
He dropped the shield, seems like the common drop.