Thunderous distortion

Evocation cantrip
Casting Time: 1 action
Range: Self (10-foot cone)
Components: V, S
Duration: Instantaneous
You produce a distorted wave of noise in a 10-foot
cone, which can be heard up to 100 feet away. Each
creature in that area must succeed a Constitution
saving throw, or take 1d6 thunder damage.
An echo of this noise persists until the end of
your next turn. If you cast this spell again before
the end of your next turn, its damage becomes d8s,
instead of d6s.
This spell’s damage increases by 1d6 when you
reach 5th level (2d6), 11th level (3d6), and 17th level
(4d6).