The Marvel Cinematic Universe is reclaiming its roots, as evident in the debut trailer for Shang-Chi and the Legend of the Ten Rings, which showcases a defining return by the shadowy syndicate that tangled with Tony Stark way back in 2008’s original Iron Man. Yet, while Shang-Chi (Simu Liu) is on a collision course with the long-awaited “real” Mandarin (Tony Leung), he will clearly have his hands full fighting a masked villain named Death Dealer, whose hitherto obscurity in the pages of Marvel Comics seems to belie the character’s importance in the film.