Thank you! The whole thing was typed up in like an hour so I'll hopefully go back and reformat/expand it a bit later, because the doubles rule was me going "RPGs are usually all about the Impact of your actions, but these kind of stories often have chain reactions and interesting accidents.. what if something occasionally increased the Scope instead of the Impact?"
I like to think of it as echoes down a hallway alerting a distant enemy or a character lifting a weapon to strike and hitting the foe behind them that they didn't even see coming. Playful twists of fate, more or less.