Deadly Cut is one of the available sword Combat Styles in Armed With Wings 3, taught by Lady Eivana to her son Leo, which both have mastered it. The fighting style features a 4-step combo for Eivana, and 6 step for Leo. This is more dangerous than Balanced Swing but less than God Cutter.
The major flaw of Deadly Cut for Leo is the reliance of non-charged attacks, which the ground attacks are quite prone to counter attacks and damage output is not enough. Eivana mastered completely different flows, able to bash away enemies with ease and ambush from air.