Continual Fire

Your fire is so strong it persists and even thrives underwater, you gain the following benefits-

• Your spells dealing fire damage are not extinguished by water
• Your spells dealing fire damage ignore fire resistance underwater
• When something crit fails its save or you crit using a damaging fire spell underwater, you deal addition bludgeoning damage equal to the spell's original fire damage, i.e. a Firebolt dealing 1d10 fire damage normally, would do 2d10 fire damage and 1d10 bludgeoning damage on a crit