Do magic items attuned to a familiar count against the arcanist's total # of attuned items?
— Thomas O. Mitchell (@TommyOJr1) January 13, 2017
The magic item attunement of your companions has no effect on the number of items you can attune to. #DnD https://t.co/hxkM2ZnZih
— Jeremy Crawford (@JeremyECrawford) January 14, 2017