What does Self Copy do?

[Enderspoons]

I'm not quite sure what it's supposed to do since I've run several tests with it and not much has happened so far. I'm not sure if this means the ability's broken or if I need to put more health on my unit to make it last long enough to trigger.

Edit: It seems to trigger with the Monkey King's staff, so I'm guessing that it's supposed to be Monkey King's multiattack.
Edit edit: I think it only works if the weapon is being two-handed.

[Bagel Knackstein]

I believe it is glitched to not work often. However, ranged weapons gave me a lot of success, so perhaps that's got something to do with it. :)

[MBRedboy31]

From my testing, it seems to activate approximately every few times the unit attacks. If you put it on a unit that is able to attack very rapidly (such as a ranged unit with a large attack speed multiplier) it will activate much more often (and most likely go way out of control and lag your computer a lot.)

[Haachamel Anyanis's Apostle [10]]

Every sucessful melee hit or every few ranged hits spawns a clone