adc concept:The Executioner

so something ive been thinking about is what if we made a champion who is ment to be played adc with a channeled auto attack like the longer it channels the more damage it deals it could either go infinitely or crit if channeled for enough time. they would have a execute effect on crit is what I imagine and slightly higher range then normal but his dps would be low in exchange for him being able to deal so much burst and ranged damage.im thinking his ult just increases his next AAs range significantly and gives him some extra ad. his Q would be a skillshot that makes your next AA deal an extra 12% per second channeled number isn't final obviously but still.his W is a one auto attack frozen mallet that last for a short time witch will give him some way to run atleast.and his E would be a short vision extender to the end of his AA range but not through walls.R is just a massive AA range extender and it makes his E give true sight and go through walls.