@JeremyECrawford You had said that Truesight sees through Alter Self, AS isn't an illusion but a physical change. So how/what is seen by TS?

— Colin Beaumont (@Comieb) November 14, 2016

Truesight—its definition (PH, 185) says what it does. #DnD https://t.co/J6w36J5aJC

— Jeremy Crawford (@JeremyECrawford) November 14, 2016