40% is a powerful number. The chance of first order double attacks with Phasma.. I will tell you that when I see him he dies FIRST no exception and even if they have Rey I will target him first. Usually due to the fact that he is squishier than Rey due to her evasion. For challenges I run him with an all bonus attack team for insane damage with him. Phasma (L) aayla, quigon, kylo and him make quick work of Vader and Boba in challenges. In the boba one I ignore the droids and burn boba before he heals with that team