@JeremyECrawford if a caster loses a hand are they still capable of casting spells? Can you "relearn" spells to accommodate a lost limb?

— Carson (@Beareaucracry) January 31, 2017

Somatic components require one hand, not two. See "Components" (PH, 203). #DnD https://t.co/C0nFWPkBdT

— Jeremy Crawford (@JeremyECrawford) January 31, 2017