One of the 16 Invokerism builds: The Playmaker
This build emphasizes on huge mobility to trap and escape from the most agile enemies. Combined with a damage deadling team with light crowd control makes Invoker playing in his own game.
Lane: Mid lane
Spells to focus on: Sunstrike, Coldsnap, Deafening Blast, Chaos Meteor, Icewall

Full guide at: http://gtm.steamproxy.vip/sharedfiles/filedetails/?id=131293957#33921