Invoker The ultimate clasher

let's first talk about the Build.
Considering invoker is a low HP low defensed character so lets start with
2pcs Gauntlets of strength
2pcs Tango of estafalation
2pcs Clarity
so this would be the skills format.
Exort > Invoke > Exort > Wex > Exort > Quas > Invoke > Exort > Exort > Wex > Exort > Invoke > Exort > Wex > Wex > Wex > Invoke > Wex > Wex > Wex ::Do not add another Quas::

Meteor > Tornado > Defeaning Blast > Dagon > GG!!

The items will be.

2 bracer
phase boots
dagon
shivas guard
guinsoo

Note: The Exort will be your key on farming