[Passive] This Passive gives a small chance for combo attacks (Per Combo count, not Hit) to sap MP from the victim; attacking with combos or Special Actives will give an attack buff that last for 5 seconds every 5 combo hits, the buff can stack up to 5 times and the duration resets each time it stacks.
The buff will circle your character when active in the form of a yellow sword, the level of the buff can be recognized based on the complexity and opaqueness.