When you complete a Campaign, attach Grand Admiral Thrawn's Ingenuity to one of your Imperial Officer Characters and put up to 4 mastery counters on that Character.
Equipped Imperial Officer gets "Pay 1 Force Deflect 1" and Pay 1 Force Persuade 1."
Equipped Grand Admiral Thrawn also gets "Remove 2 mastery counters from Thrawn Choose a rarity. Each non-Imperial with the chosen rarity gets -1 power until end of turn.