Champion Clones proc Spoils of war(health supp item passive) without needing another real champ
I've only tested it on Wukong
and Shaco
so far with similar but different results.
There is no way to gain additional gold when there shouldn't be because it's shared with the clone, but it does heal when it shouldn't, especially on Shaco's clone which is bugged to not consume charges most times and can continually proc the execute and heal for the duration of the clone.
I don't think it's a big deal because of so many variables like it not working until lvl 6, only with ult which can be killed easily by ranged, bad scaling.
It probably works for 
and 
ghost's but I'm done with non-sandbox mode..