Antimeta weapons: Plasma Sword redemption

How can a weapon like plasma sword,a mastery rank weapon, destroy lv 145 enemies? Simple, with the right combination of arcanes (fury plus avenger) and a power riven. Sadly, the -finisher doesnt allow to use the fast and powerfull combo Coiling Impale. Have fun guys! Warframe® https://store.playstation.com/#!/it-i...