Huh.
I've never had an issue with range though since I just jump onto the caster minions, explosive shot the enemy mid, run back and blow up the minions in their face.
Anyway, just had a game with an AD lux, Morg, and myself as Cass.
"Stand here to die"
As soon as lux or morg landed a binding then we would all put down our zones on them and burst them to nothing before they could move.
Oh and BTW this AD lux was amazing.