Alignment:*prescriptive* or *descriptive* of PC’s actions?Descriptive
— Mike Mearls (@mikemearls) September 20, 2017
This. It should act as an initial guideline to the TYPE of character you intend to play, then shift according to actions through play
— Matthew Mercer (@matthewmercer) September 20, 2017
Alignment is descriptive, not prescriptive. The alignment of a creature "broadly describes its moral and personal attitudes" (PH, 122). #DnD https://t.co/mdsKSipJcY
— Jeremy Crawford (@JeremyECrawford) September 20, 2017