Added Illuminate to Multicaster spells

Update harmony/one-with-nature to do what it says it does

One with Nature's description and getNb talent both say that the number of removed debuffs scale based on cTS but it actually scales based on raw talent level, so fixing it to correctly use the getNb function.

See merge request !660

After resting for a few turns, if a party member has a lower life regen than the main character, it will use the main character's regen instead to avoid super long pointless waiting