@JeremyECrawford Curious why a spell with only M components is perceivable. Is the intent that the caster is moving/manipulating the material component in some way despite the lack of S components?

— Armando Doval (@armando_doval) November 22, 2017

Handling or displaying a material component is part of an M-component spell. It's a visible part of the spell's casting. #DnD https://t.co/kUPYV3UU95

— Jeremy Crawford (@JeremyECrawford) November 22, 2017