[quote=@ERode]
Think it'd be better to just set it as a nebulous mana use. Or, if you're going to go with spells as bullets, to give em a cantrip as well so they're not doing nothing when they run out of spells.

In Goblin Slayer, at least, it seems like you only get 1-2 spell casts as a newbie.
[/quote]
Mana as stamina (ala Kunosuba) would make the most sense, but we still should only have like 2-4 spells/spell-like abilities at start. Does that work?