@JeremyECrawford Do spells that are Radius but not a sphere extend up and down also or are they just say 5ft thick?
— Steven Connor (@Mazoshi1987) October 28, 2016
A radius in the game extends in every direction, unless a feature says otherwise. #DnD https://t.co/TN813HnSVn
— Jeremy Crawford (@JeremyECrawford) October 28, 2016