So begins a new age of knowledge.
Invoker is generally considered the hardest hero in Dota 2 because instead of having 4 set spells, he creates spells with combinations of quas, wex, and exort. In addition to knowing what all 14 spells do, good timing and positioning is required to play a good invoker.
He has a big head for a reason. Even remembering all those spells could be a problem….
Folded from a single sheet of square, uncut binder paper.