LostHaven
Loser's queue is real and it's coming for you.
If it makes you feel better, I'm about to hurt Avenger really, really bad.That's not really a Conceptual Weapon, nor is it really a Mystic Code. It's just a crossbow that fires a lot of bolts - more mechanical than magical, closer to science than thaumaturgy.
A Conceptual Weapon is what it sounds like: a weapon with a concept that it imposes on something. For example, Black Barrel imposes "Death" on things, which is how it can actually hurt Ultimate Ones beyond tickling them into temporary paralysis.
Or, for another example, Black Keys are Conceptual Weapons that impose "Purification," making wounds created by them difficult to heal for wicked creatures by purifying their unnatural traits and leaving behind only soft, humanlike flesh. Their specialty in combating evil spirits and vampires goes so far that even an ordinary Black Key can affect Servants to some degree (let alone the Servant-tier Black Keys that Ruler uses. Yikes! I'm actually kind of lowkey mad that Avenger no-selled them and regenerated instantly. I aimed at her ankle in hopes it'd slow her down and I could finish her off with her limited mobility, but that gamble failed. Curse you,LostHaven ! Curse you and your pre-planned narrative melodrama author fiat!)
If you want a rapid-fire crossbow, try something that uses a string of ether instead of a normal drawline, and new "bolts" manifest out of this ether rapidly. Don't bother with science; Berserker is literally a Divine Spirit of War. Breaking the laws of physics to create supernatural armaments sounds like something right up her alley, even without access to her Authority.
