Underwater Spellcasting

Rules As Written

None? Soooo...it's fine?

House Rule

Verbal Components

If you are able to breathe underwater, you can cast spells with verbal components as normal while underwater.

If you cannot breathe underwater, casting a spell with a verbal component takes 1 minute's worth of air. RAW, you can hold your breath for a # of minutes equal to your Constitution modifier + 1 (PHB 183). If casting this spell forces you to run out of air, you immediately begin drowning, as described in PHB 183.

Somatic Components

This part was too annoying to house rule, so we're ignoring it for now. Flail away.