Had to check out your build aswell :D and i like the thought about it!
cannot say that i've tested it (i dont even own rumble O_O)

BUT, i do know his dmg tends to fall to the ground around lvl 10+

+1 :)

This is one of the best rumble builds out. I personally get boots of lucidity but mercury treads is good as well. Good luck on any future builds

Thanks alot. This has really helped me out with playing rumble.

Awesome build. I really love it and it is very descriptive. +1 when I can :)