While channeling, Tassadar gains Basic Attack damage and mana regeneration. His trait is Resonance Beam, which makes his Basic Attack a channeled beam that slows the target. Tassadar is a Ranged Assassin hero based on area control and channeled abilities. The resulting explosion succeeded in killing the Overmind, and while the zerg still rampaged across Aiur their loss of an all-powerful leader gave the protoss the room they needed to survive. Despite their best efforts, nothing could significantly harm the Overmind, and thus Tassadar sacrificed himself by crashing his carrier into the massive creature while channeling both the Khala-based powers that he had grown up with as well as those of the Dark Templar. After defeating the Conclave forces that were more intent with stopping him than the zerg, Tassadar rallied what was left of his allies and made in one last stand against the Zerg Overmind. Ever dedicated to protecting his home regardless of his own fate, Tassadar returned to the protoss homeworld of Aiur to defend it from the zerg, convincing Artanis, Zeratul, Raynor and the protoss hero Fenix to come to his aid. Eventually learning to use those powers for himself and combine them with his understanding of the Khala, Tassadar gained completion beyond the scope of the Khala.Дespite his new abilities, the Conclave abhorred his interactions with the Dark Templar and branded him a heretic to be executed. Though initially hesitant to interact with the Dark Templar, Tassadar came to appreciate the powers of the Dark Templar that were lost to those who embraced the Khala by interacting with their Dark Prelate Zeratul. His fight would eventually bring him into contact with several allies, including a terran named Jim Raynor as well as a group of protoss known as the Dark Templar, an individualistic sect that had been exiled in ages past for refusing to join the Khala.

Eventually Tassadar was ordered to return home and face the Conclave for his insubordination, but he refused in favor of continuing his fight against the zerg as best as he could without sacrificing terran worlds. Tassadar, however, felt it was the protoss' responsibility to protect the terrans and refused to carry out his orders unless there was absolutely no hope of saving the planet in question. Once the Conclave examined the zerg and realized the threat they posed, they ordered Tassadar to wipe out any signs of their infestation, including worlds inhabited by the terrans. It was Tassadar who made first contact with both the ravenous zerg and the relatively young terrans.

He took in a young protoss named Artanis as a pupil, training him in the ways of the Templar. Despite his reservations about the protoss leadership, his innate intelligence and strength allowed him to rise quickly through the ranks and eventually earned him the rank of Executor of the Empire's forces. However, he also questioned the Conclave's rigidity, stoicism, and dogmatic obsession with tradition. From an early age, Tassadar was wholly devoted to the Khala, the protoss religion and psionic link that shared thoughts and emotions between their society. Tassadar, once branded a heretic by the ruling body of the Protoss Empire known as the Conclave, is now considered one of the greatest heroes in the history of this enigmatic race of psionic warriors.

Heroes of the storm keeps crashing