[quote=@SSW]
[@Turboshitter] How is keeping track of mana going to work? It seems like that would make things super complex and slow them down a lot, especially for Casters. I was planning on playing a Caster if that's not taken already, but I don't really get this ruling. 
[/quote]

That’s more of a rule for Masters than Servants in all honesty and after some second thoughts, I’m considering ditching it. Originally it was an attempt to make powergaming difficult but you make a fair point about it being an unnecessary inconvenience.