Card limit when stacking cards?

[kaisim_2492829]

Almost all the gold heroes I have that I use are at Dominion level.

All of them when stacked at 5 cards are only 80% success rate.

I've never heard or seen a Dominion level hero have more than 80% saint success rate.

like i said, i am not even sure if i remember all the correct circumstances, but there was an upset going about failing 100% chances. maybe it was archangel or something like that, its not the point. the initial question was off topic anyways and i cant find the original thread this was in anyways. so why bother and stretch it even further