Dragon Sorcerer and Unarmored defense AC

@nerdimmersion @JeremyECrawford Would the AC bonus from Dragon Sorcerer Draconic Resilience stack with Unarmored Defense from Monk/Barbarian? no – any effect that gives you a new AC formula does not stack. pick which one to use

— Mike Mearls (@mikemearls) July 27, 2015