How would you build this as a monster ability/attack?
As the title says. This attack from the boss Balteus from Armored Core 6, firing hundreds of missiles at once at a single target, has always looked really cool to me. I was wondering how to go about and make it into a monster ability that isn't just do a save or take damage. Something that feels oppressive, either in its effects or the way to avoid damage.
My idea for now would be that you just do multiple saves in order to reduce the number of dice you're saving against, or maybe an attack roll that also requires a save? Not sure. Hence why I want some guidance because I think this is too cool to not include in some manner.
Thanks in advance, looking forward to some ideas.