By using Ursa you can finish all the bosses easily, including Invoker.
Power Treads, Butterfly, 2 Rapiers, and 2 Hearts, with birdy carrying Vladmir Offering.

Just type -apntnmnb (All Pick, No Top, No Mid, No Btm) so you won't get any creeps too.
I manage to kill invoker with a more budget style, which is Soul Keeper's Sunder and Necrolyte's Reaper's Sycther.
Try it out, its fun thou to find out different way of killing the ultimate Invoker.

This post has been edited by Shufflerz: Oct 29 2007, 04:41 PM