Air Bubble

You enchant the air nearby you to bind together drawing energy from the air elemental plane. This bubble is a 2 foot diameter sphere that forms around your head. This allows you to breath from the bubble as long as the spell is in effect. The bubble is unaffected by piercing damage, the only way for it to end early is through a dispel magic spell. This air has no smell and you can’t see the bubble unless it's underwater or another liquid. The bubble will keep out harmful gases like the gas of a stinking cloud or cloudkill but does nothing to aid you in seeing in such a spell.

At Higher Levels. When you cast this spell using a 3rd level or higher, increase the duration of the spell by two hours for each spell slot above 2nd.