When your build step starts, if you have a Supreme Leader in any arena or your build zone, add 3 counters to this Resource.
Remove 1 counter Put 1 mastery counter on one of your First Order units.
Remove 5 counters One of your units with 1 or more mastery counters on it gets Fury 4 and Fortitude (This unit can prevent unpreventable damage to itself.) until end of turn.