@JeremyECrawford
Is there a mechanic for an ally to jump in front of an attack? (take hit/ reduce damage to an ally(& prevent their death))

— Mathew Michalak (@Trogaf) November 12, 2016

Protect someone: give cover (PH, 196), use Ready cleverly (PH, 193), use Goading Attack/Sentinel/etc., cast an appropriate spell #DnD https://t.co/bKeF6tlNXi

— Jeremy Crawford (@JeremyECrawford) November 14, 2016