User blog comment:Willbachbakal/(Item Concept) A New Kind of Crit/@comment-33536623-20150702030237/@comment-1330314-20150702030705

... with the caveat that crits don't do any additional damage on their own, nor would they increase your ult's damage. Rather, each crit would apply any of the on-crit effects you have, so you might be able to deal an instance of additional damage with that combo, but wouldn't be able to amplify your existing damage.

That would change a bit if you factor in Voidlings, which would, in theory at least, be able to help you crit, but that would be a different source of power.