9.1 Sivir PATCH NOTE : Buff? Nerf? Remake? Rollback?

Sivir

Champion hits don't reduce Q's damage.

Buffing the dream Q that hits all five enemy champions in a teamfight.

Q - Boomerang Blade

DAMAGE FALLOFFHitting an enemy champion no longer decreases Boomerang Blade's damage against subsequent targets (tooltip will be updated in 9.2)

Source : https://na.leagueoflegends.com/en/news/game-updates/patch/patch-91-notes