@JeremyECrawford For ex,a creature is in darkness and no Hide action, is there a "miss chance" for attacks against it or only disadvantage?
— Dan Hass (@danhass) February 23, 2016
If an attacker can't see you, the attack roll against you has disadvantage. #DnD https://t.co/Nogvu42HNq
— Jeremy Crawford (@JeremyECrawford) February 27, 2016