But all of you, not being magi, have no access to prana which you might go about supplying us with.We Servants require prana if we are to be active.It will all be over for us if we use up the little we have in our initial reserves, so——merely maintaining a continued state of existence is costly enough as it is.Since there's only one person left, can't we all just beat 'em up if they don't listen to us?What are you, some sort of devil?However, Casters are magi themselves.I concur, Lancer.The use of Noble Phantasms and so forth are most certainly restricted by this limitation.Oh, I know how that is. It's like if you had a bunch of Eneloops, but then a Kyouko‑chaaan comes along and pleasantly breaks your charger.Eneloops are a common brand of eco-friendly rechargeable batteries. I use them myself.Quit being so cheap, before your heart ends up as empty as your words!It wasn't pleasant.
Pay me back already, dammit.