@JeremyECrawford Does an earth elemental trigger an OA when it burrows? It is within 5 ft, but the creature can no longer reach it #dnd

— James RePass (@jprepo1) April 3, 2016

An opportunity attack occurs right before the target leaves your reach (PH, 195). #DnD https://t.co/qTCXgu0pmb

— Jeremy Crawford (@JeremyECrawford) April 4, 2016

@JeremyECrawford thanks. yes, the debate here was does it ever leave your reach if it goes into the ground adjacent to you

— James RePass (@jprepo1) April 4, 2016

Your melee reach does not extend into the wall or floor. #DnD https://t.co/m950JmntwK

— Jeremy Crawford (@JeremyECrawford) April 4, 2016