I've added a new damage source type called 'fortitude', which unlike the other sources will draw upon the constitution stat to calculate its damage modifiers.

The fire, ice, and acid breath racial abilities are now typed to use this new sourcing so you can play around with it before its utilised in larger mechanics.

Lastly, the ice breath racial is syntax is no longer FREEZE, and now instead uses BREATHE ICE AT <thing>. Enjoy!

Penned by my hand on an unknown date.