Silence

From Player's Handbook, page 275.

Description
2nd-level illusion (ritual)


 * Casting Time: 1 action
 * Range: 120 feet
 * Components: V, S
 * Duration: Concentration, up to 10 minutes

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.

Learned By

 * Classes: Bard, Cleric, Ranger
 * Subclasses: Druid (Circle of the Land (Desert)), Monk (Way of Shadow), Sorcerer (Divine Soul), Warlock (The Fathomless), Warlock (The Raven Queen), Warlock (The Undying), Wizard (Theurgy)