Wait does I thought Thunderwave was a 15 cube centered on you, can you clarify?

Wait does I thought Thunderwave was a 15 cube centered on you. But that would be a 5ft radius. @mikemearls can you clarify?It is a cube – you stand beside it

— Mike Mearls (@mikemearls) August 26, 2017

Thanks for the clarification. That makes more sense. Is there a reason for it be a an adjacent cube compared to say a 15 ft cone?That's how it worked in 4e, so we decided to keep it consistent

— Mike Mearls (@mikemearls) August 26, 2017