This is also why Buster servants with huge Atk self buffs like SNero, Ozy, and Kintoki hit way way harder in Koyan+Oberon comps than ones with Buster up steroids. Because neither Koyan nor Oberon have Atk buffs of their own, any self atk buffs will have significantly magnified effects, and you get wildly silly things like Ozy slapping away entire break bars with single non-crit buster cards because he's walking around with +120% Atk and +100% Buster