Source: System Reference Document 5.0
The text on this page is Open Game Content, and is licensed for public use under the terms of the Open Game License v1.0a.

Classes: Bard, Cleric, Ranger

Classification: 2nd-level Illusion (ritual)

Casting Time: 1 action

Range: 120 feet

Components: V, S

Duration: Concentration, up to 10 minutes

Saving Throw: None

For the duration, no sound can be created within or pass through a 20-foot-radius sphere centered on a point you choose within range. Any creature or object entirely inside the sphere is immune to thunder damage, and creatures are deafened while entirely inside it. Casting a spell that includes a verbal component is impossible there.