Two questions for you, with warbird, will the untradeable version be able to work as well?

Also, I see you mentioned that wearing Gleam, Tinsel, and Warbird will enrage monsters doing more damage. Can you give some insight as to what the difference in damage will be wearing / not wearing, and then also say there is a full 5 man group, 2 have pets and then the other 3 don't does anything come into play there?