What's generally good docent to have on an Iron Defender?
I will eventually give it the Trip enhancement, so Combat Mastery seems to be good. (Do Iron Defenders automagically trip enemies, or do I have to click its hotbar each time?)
Right now at level 13, my Iron Defender has Evasion and the AC & DR stuff. It currently has a +4 CON docent with acid guard, and might get upgraded to the Gorgon Docent. I haven't been too excited about the Thick Skin docent from the anniversary event, but am wondering if the ML10 version of it on my Iron Defender might actually not be too bad. Is there better stuff out there for an Iron Defender that isn't too challenging to acquire? (My artificer is a Warforged, so I might be motivated to make an extra effort to farm up cool named docents.)
Collars are a bit tougher, and I assume I'll have to craft a decent one.