We've got a mage who has an Aversion Staff. It says: "You gain a +2 item bonus to all defenses against attacks from enemies that are subject to effects caused by you."
He also uses Shaped Consciousness to have a shard of his consciousness floating around. I can't find this ability in the online compendium, so I can't quote the rule for you. The shard has an armor class equal to his own.
My question is, if an enemy attacks his shard while under effect of the Aversion Staff, does the shard get the +2 bonus to AC? Is it considered "not him"?