Edit: Move this post if you can, please! I didn't notice the AA bug forum until after I posted it! Sorry!
I recently purchased this AA on my Necro, but unfortunately it doesn't seem to function properly.
Even with an enemy NPC targetted, pressing the hotkey gives you nothing but a "You must first select a target for this spell." error msg. I tried targetting nothing, another NPC, and even myself, but I receive the same error msg each time. Zoning did not seem to fix the problem.
I'm not aware if this same bug is effecting the other Necromancer swarm pet AA's, but I will let you know as soon as I can find out.
Just giving you all a heads up!
Thanks,