*i.e., for the Archers from the same mod, the arrows also split during flight and one flew to each of the targets, if there were any.
*i.e., the projectiles fly only to existing targets in the area of effect. Shooting at one - one projectile flies, shooting at three, one separate projectile flies for each... (in general, it's complicated. It was easier on paper.)
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I think either I implemented the AoE differently (although adding "War-dance" to the abilities, as I have already found out, does not affect anything except the display of the Perk in the game), or there were additional manipulations for this effect in that mod...