>>54280203Invoker is a Hero in DotA that basically skills elements (Quas, Wex, Exort) instead of classic skills. At any given time Invoker can summon three spheres of those elements and then use his ultimate Invoke to get up to two skills based on the combination of elements. Those skills then work again like classic abilities, having cd and stuff but scale based on how much points you spend on each element. This gives Invoker access to more skills than any other hero has in the game. As the Invoke cooldown decreases later or shit that can straight up reset those Invoker is one of the heroes with the highest skill ceiling.
Funfact: the very first implementation of Invoker in DotA 1 was order sensitive giving him like 20 spells to work with but he got removed at some point and only reimplemented later without this.