Invoker is a ranged intelligence hero who is very difficult to master. He is unique in that he possesses a total of 14 abilities in his arsenal; three of them - Quas, Wex, and Exort - are reagents and one is his special ultimate Invoke. The three abilities he learns throughout leveling up can have three instances, which serve as the basic ingredients or components for him to create a new ability using his ultimate. Once the reagents or elements are combined, he can invoke one out of ten different abilities. All of his invoked abilities are capable of a multitude of actions, from damaging enemies to aiding his allies, and even saving himself from danger. His three reagents can be upgraded up to level 7 which determines the power and potency of his invoked abilities, making it more powerful than an ordinary spell. Because of this, he can be played in almost any role possible.
Invoker can be a carry, semi-carry, ganker, pusher, initiator or even support. His three reagents provide passive attributes with each level, and each instance of his reagents provides a passive bonus, allowing for specialization at early levels and situational boosts at later levels. His extremely flexible nature allows him to use many different combinations of items effectively but also make him dependent on solid builds and a good gold advantage. Because of the extra points needed to level his three reagents, Invoker also has a special Attribute Bonus ability at level 25 that allows him to gain 6 points in all stats. In its earliest, and some would say most potent form, magic was primarily the art of memory. It required no technology, no wands or appurtenances other than the mind of the magician. All the trappings of ritual were merely mnemonic devices, meant to allow the practitioner to recall in rich detail the specific mental formulae that unlocked a spell's power. The greatest mages in those days were the ones blessed with the greatest memories, and yet so complex were the invocations that all wizards were forced to specialize. The most devoted might hope in a lifetime to have adequate recollection of three spells—four at most. Ordinary wizards were content to know two, and it was not uncommon for a village mage to know only one—with even that requiring him to consult grimoires as an aid against forgetfulness on the rare occasions when he might be called to use it. But among these early practitioners there was one exception, a genius of vast intellect and prodigious memory who came to be known as the Invoker.
In his youth, the precocious wizard mastered not four, not five, not even seven incantations: He could command no fewer than ten spells, and cast them instantly. Many more he learned but found useless, and would practice once then purge from his mind forever, to make room for more practical invocations. One such spell was the Sempiternal Cantrap—a longevity spell of such power that those who cast it in the world's first days are among us still (unless they have been crushed to atoms). Most of these quasi-immortals live quietly, afraid to admit their secret: But Invoker is not one to keep his gifts hidden. He is ancient, learned beyond all others, and his mind somehow still has space to contain an immense sense of his own worth...as well as the Invocations with which he amuses himself through the long slow twilight of the world's dying days. The Invoker is the most well-rounded spellcasting hero, due to his massive array of spells. Using his three elemental reagents and his Invoke ability, the Invoker can utilize a total of 10 different spells. Due to his complexity and fragility, the Invoker is a bad choice for newer players. With some experience, however, he becomes a force to be reckoned with. The Invoker is capable of massive area of effect damage, powerful disabling spells, very strong summons, and potent enchantments. While other spellcasters tend to be focused in one area, the Invoker has the ability to change his role at will. His spells tend to start out weaker than comparable abilities, but since his reagents have 7 levels each his potential spell power is very high. Although mastering his spells takes perhaps the most practice of any hero, he is definitely worth the time. At level 25, Invoker has 7 points each towards Quas, Wex, and Exort, and 3 points towards Invoke. Uniquely among heroes, Invoker does not possess the normal Attribute Bonus ability. Instead, he has a special Attribute Bonus ability at level 25 that allows him to gain 6 points in all stats. Additionally he gains a permanent attribute bonus to one of his attributes each time he levels up Quas, Wex, or Exort.