Let's say I had a house rule like this:
Casters and Spellcasting Ability Scores
Arcane casters may choose to base their casting on either Intelligence or Charisma. Divine casters may choose to base their casting on either Wisdom or Charisma. This changes which score is used to determine the highest level of spell they can cast, bonus spells per day, and spell save DC.
and I want to make it so that every arcane caster doesn't choose int and every divine caster doesn't choose charisma. How would I go about adding incentive for that?
Casters and Spellcasting Ability Scores
Arcane casters may choose to base their casting on either Intelligence or Charisma. Divine casters may choose to base their casting on either Wisdom or Charisma. This changes which score is used to determine the highest level of spell they can cast, bonus spells per day, and spell save DC.
and I want to make it so that every arcane caster doesn't choose int and every divine caster doesn't choose charisma. How would I go about adding incentive for that?