Making passive spells mutually exclusive

[Ferocimo]

Hello,

I'm working on several new passive spells and I noticed that, to my knowledge, I can't seem to configure Magic or the passive spells so any player can only have ONE passive spell at the time.

I don't know if there is a way to achieve that, but if there isn't, I think there should : it allows us to create passive spells that define a specific gameplay, which you have to choose depending on what you want to do.

For instance, you will enable the passive spell "Critical" if you want to deal some more damage, but at the expanse of your own safety, because another passive could have improved your resistance. On the other hand chosing that resistance passive spell means you won't deal as much damage.
You could also enable a spell to mine more efficiently but then if you encounter foes, you won't have any passive spell that helps you fight them.

Overall it would enable for a more balanced gameplay and more powerful passive spells ; as it is, you can't really make passive spells too powerful since players can simply stack them.

Thank you for your time.