I believe they only drop certain times of the year during events, Christmas event if I recall correctly, might be wrong on the event though.
No one I've seen ever really farms them during the event so I imagine finding a hit one is quite rare.
I, myself, have one with 3 stats but it's hitless. Hit isn't really necessary on that sword, in my opinion, since it's special isn't that good (to me atleast).
Easy to do pretty good damage with a N-H-H combo.