If you are a classical wizard you have a limited number of spell slots that you have to prepare in the morning. When you use those up you become a highly educated regular nerd.
Warlocks get less spell diversity but much less limitations on how often they can cast spells.
The “cannon” explanation is that it uses so much energy to channel magic that, after a few major spells, you’re entirely exhausted to the point of collapsing if you were to try to push it beyond what you’re capable of. As you learn and practice it becomes easier and you can make greater physical changes to the universe, but there’s still a limit and it’s still incredibly tiring.
How do you run out of spells?
That’s like “the server’s down because we ran out of code.”
If you are a classical wizard you have a limited number of spell slots that you have to prepare in the morning. When you use those up you become a highly educated regular nerd.
Warlocks get less spell diversity but much less limitations on how often they can cast spells.
The “cannon” explanation is that it uses so much energy to channel magic that, after a few major spells, you’re entirely exhausted to the point of collapsing if you were to try to push it beyond what you’re capable of. As you learn and practice it becomes easier and you can make greater physical changes to the universe, but there’s still a limit and it’s still incredibly tiring.