Psiberzerker
Author
And like a Claymore Mine, the spread means it's not likely to score too many hits unless there's a lot of bodies, plus it would taper off with distance. Unfortunately, so many projectiles would be game breaking by forcing the processor to track them all. You mentioned Twin Souls, so I'm assuming this is a Conjuration? Stagger would be a much more balanced effect, and easier to code as an AoE, with minimal damage from the concussion, IMNSHO. I'd also dial it up to about 100 magicka so first level characters can cast it, but nothing else until Magicka recovers, but when they earn Adept Conjuration (seems this level spell) there should be plenty to combo with a summon, or Necromancy.I was trying to work out how to balance the damage for that cost, I was thinking about 50 shards for 1 lowly point of damage a piece.
If you look at all of the Adept level spells, none of them are less than 100 magicka, but 75 is closer to an Apprentice casting cost. Perhaps a perk could add the Shards, you could call it "Schrapnel"?