does the extra damage on an attack roll of 20 for Sword of Sharpness get doubled as well? IE, actually 8d6 since a 20 is also a crit? #dnd Where is the 4d6 coming from? That's not in the DMG.
— Jeremy Crawford (@JeremyECrawford) January 5, 2018
The srd from the WotC site has it at 4d6. Interesting. The DMG is the official source, not the SRD.
— Jeremy Crawford (@JeremyECrawford) January 5, 2018