[ Whatever Rin is about to say, Muramasa cuts her off. ]

This is a bigass anthill, though, so why not use it? [ He ignores Rin's sharp glare, finally stepping in to properly join the conversation. The tip of the sword sinks into the floorboards as he leans on it, as he eyes the two of them thoughtfully. ]

The best solution's the simplest one. It's not like that new clear blast is actually gonna do any damage without the Servant it's commanding, anyway. There will still be one left over— [ To Ratio: ] —which you don't need to hoard to keep her from killing you. [ Now, he swaps to Rin. ] And none of the usual reasons for conserving them apply without one of your Wars to save it for.