a quiver can only hold so many. weight limits would force you to use them wisely, enemies would would run out also- you'd have to change your tactics. I've played D&D pnp and solasta and running out happens to enemies and pcs at times if they're not used wisely - I don't think you're thinking about that at all. besides the fact that this is D&D (hopefully) and not an arcade hack & slash,,,,