PLEASE don't give Zeke's Herald 50% chance!
I think everyone can easily figure out that that's just an RNG disaster waiting to happen...
Come on, we have all laned against a Tryndamere before (or as one), and i think we can safely assume that making it so the damage is random is a HORRIBLE idea.
Solution? Make Zeke's Herald give a 50% AD multiplier on auto attacks, just like Ashe's passive.
That or we are all doomed
gives 55% crit. So it's really only 45% crit on ADC's, and less if they took anything else with crit on it.