Well, so here's how it would work, [i]Ex.[/i] I have a Gjallarhorn, I use Arc Rounds, my next clip now deals Arc Damage with a bonus Stagger so Archon Priest stays staggered for longer. or If I have Fatebringer, I use Arc Rounds, my next clip will already deal Arc Damage but also stagger targets greater. Initially it would improve already Arc weapons but I hit 2000/2000 characters so it was dumbed down.