Refresh Air

2nd-level transmutation

Classes: cleric, druid, ranger, sorcerer, wizard

Casting Time: 1 action

Range: 30 feet

Components: V, S, M (an inflated bladder you pop)

Duration: Instantaneous

With a gesture and forceful word, you reinvigorate an existing air envelope within range. The air quality of the envelope increases by one step. If the envelope is already fresh, it remains so for 120 days. Toxins within the air are lessened and creatures within the envelope have advantage on saving throws caused by poisonous gases that were within the envelope when you cast the spell. The spell has no effect on poisonous gases added to the envelope at a later time.