@JeremyECrawford Help us! Sorcer Wild Magic: according to the rules, as a DM, I have to decide whether roll the 2nd d20 or is mandatory?
— Draconis (@DerynDraconis) January 27, 2016
It's up to the DM whether a sorcerer rolls a d20 to see if a surge of wild magic occurs. #DnD https://t.co/R9LInqErE4
— Jeremy Crawford (@JeremyECrawford) January 29, 2016