Silence
2nd-level, Illusion (ritual)
- Casting time: 1 action unless cast as a ritual
- Range: 120 feet
- Components: V, S
- Duration: Concentration, up to 10 minute
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.
Source: SRD / Basic Rules