@JeremyECrawford Can a caster tell by VSM components what spell another PC/NPC is casting? What if an arcane adept sees a divine casting?
— akgeek (@akgeek) June 6, 2016
As DM, I let you ID a spell if you know it (or it's on your class's spell list) and if you perceive V, S, or M. #DnD https://t.co/3yavU9O6iA
— Jeremy Crawford (@JeremyECrawford) June 6, 2016