This Guide will help you to make invoker role <Support, hard Support, Offlane> more usable than the original Guide [QUAST, WEX].

why? The reason is:
1. QUAST-WEX will need so distubing your teammate tempo with tornado and EMP.
2. your Cold Snap will more usable when get combine with Meteor and Ice wall
3. you dont need EMP and Tornado so much, becouse that just gonna waste your mana, and teammate effort to kill