If one cast a spell on you and fail when you make a Saving Throw, do you know?

@LeMarcSharma @JeremyECrawford If one cast a spell on you and fail when you make a Saving Throw, do you know? Ex: Charm Person, ScryingDM's call, based on nature of spell. As default, no unless there is an obvious effect #wotcstaff

— (((Mike Mearls))) (@mikemearls) September 1, 2016

@LeMarcSharma @JeremyECrawford by effect, mean visual effect or similar from description of spell #WOTCstaff

— (((Mike Mearls))) (@mikemearls) September 1, 2016

@LeMarcSharma @JeremyECrawford by effect, mean visual effect or similar from description of spell #WOTCstaff

— (((Mike Mearls))) (@mikemearls) September 1, 2016