Why is executioner's calling still in the game?
No one buys it. So whatever value it has, its passive isn't good enough to justify an item spot.
I think it'd be pretty cool if it built out of a BF sword and a vamp scepter: then you'd have an item which stole health and slowed down the other guy's ability to do the same.

80 AD
10% Life steal
Auto attacks apply GW for 2 seconds (1.5 if ranged)
Or riot could make it a BF sword and cloak of agility item that's meant to be an option for IE users.
80 AD
35% crit
Auto attacks apply GW for 2 seconds (1.5 if ranged)
Or just built it out of

and let it be every ADC's first buy.

+275 g=2700 g