The Kisa Kisa no Mi is a Paramecia-type Devil Fruit that allows its user to bring misfortune on whatever they wish (people, places, objects, etc.), with the exact effects being anything the user can think of, ranging from minor curses to destruction of the surrounding area of the target.
Strength and Weakness
The user can wield manipulation over bad luck and can also plant a curse on their victims. The ability is manifested by a light blue wave of energy directed at or surrounding the target of their attack. The power of "bad luck" depends on the user, as it can grant the victim minor hexes with a certain effect to forced demolition of their target's surroundings. A huge advantage of this power is that the curses also apply to Devil Fruit powers as they may fail to work properly or backfire on their user.
Some examples of minor effects of the fruit would be various sicknesses, unimaginable pain, impediment of speech, severe headaches, and physical defects. The more life-threatening events that the fruit is able to conjure is the target being in the wrong place at the wrong time, making structures crumble over or beneath their target, and making other things happen just by the very thought of the user.
Aside from the standard Devil Fruit weaknesses, the events of "bad luck" occur to her enemies within her line of sight. If the target is too fast or far away for the user to see or if the target is invisible, then the user may not be able to attack directly.