Circular Breathing

You begin carefully regulating your breath so that you can continue playing longer or keep breathing longer in adverse conditions. Until the spell ends, you can breathe underwater, and you can utilize

Level
Cantrip
School
Transmutation
Casting time
1 bonus action
Range
self
Components
S, M
Duration
5 minutes
Classes
Bard

You begin carefully regulating your breath so that you can continue playing longer or keep breathing longer in adverse conditions.

Until the spell ends, you can breathe underwater, and you can utilize bardic performances that would normally require breathable air. In addition, you have advantage on saving throws against gases and environments with adverse breathing conditions.

At Higher Levels. The duration of this spell increases when you reach 5th level (10 minutes), 11th level (30 minutes), and 17th level (1 hour).

Source and licence

From Level Up: Advanced 5e (A5E SRD).

Licence: SRD (CC BY 4.0).

Every licence notice Tavern Bag relies on.