1st-level · Evocation
Casting Time 1 action
Range 30 feet
Components V, S
Duration Up to 1 minute (concentration)
Classes Druid, Ranger, Sorcerer, Warlock, Wizard
You target a creature with a blast of wintry air. That creature must make a successful Constitution saving throw or become unable to speak or cast spells with a vocal component for the duration of the spell.
Source: Deep Magic 5e · OGL/Open