baseline spells still need to be at least moderately viable for general fights (like they do less damage than average bows or swords or something) but use a simple AP and cool down system and can be used more often. in harder fights (like bosses) one can use the buffed versions costing hard to get (but NOT finite) resources every time/cast/use.
Yeah I can imagine this working great: "Mere goblins? I'm gonna save my infinite ressource that make my spells stronger, just in case I need it later."
