Superheated Spells
Your particular brand of fire magic can superheat air or water instead of producing fire, allowing your spells to remain effective underwater.
Preqrequisite
Ability to cast spells, Mysticism 5 ranks.
Benefit
Your spells, spell-like abilities, and supernatural abilities that deal fire damage deal an additional amount of fire damage equal to half your level (minimum 1), and they deal full damage underwater.
Normal
Fire damage deals one-quarter damage underwater.
Source
Fly Free or Die: Professional Courtesy pg. 48
Dragonscript
ID
cb4d3251ec57fc9c05f2509f
Preqrequisite
and [{character.mysticism.ranks >= 5}, not {character.spells length 0}];