Board Thread:Off Topic/@comment-24993958-20161230201819/@comment-26397825-20170106022841

It's called aura. As in, a spike in aura covers the edge of the weapon, making it do piercing damage instead of blunt damage. And cutting and piercing are very different things; cuts are specifically skin level, long and drawn across the skin, doing damage over a spread out area. Piercing is specifically penetrating the body to do more damage to a single point.