See the user build section for builds using this weapon.
Normal attacks have a little area of effect, and when enemies are close a portion of the damage is spread, much like Scindo. It is very noticeable when using elemental mods, as the visual effect is applied with the damage too.
It appears that during the start of a charge attack, if aimed at an enemy while being very close, the enemy is damaged without the sword even being swung at yet. As with the previous note, it's easy to notice with an elemental mod.