Berserk State (Theros)

A Berserk State is a psychosomatic state of hyperarousal that is characterized by drastically increased strength, inability to feel pain, and marked increase in endurance. It is an adaption of the found in mammals. This state is specifically induced by intense rage that persists until either the individual is killed, forced into a state of shock due to severe trauma, or the source of their anger is destroyed or killed.

Individuals who can harness this state as a weapon are called a berserker.

Prevelance
The berserk state originally evolved in the lineage of ancient trolls. Confirmed accounts of berserk states have been documented in every troll-descended species except high elves and goblins. In the case of goblins, the adrenal system is largely too underdeveloped to induce such a state, although the fight or flight response is intact. High Elves have never been recorded to this mental state. Berserk states are most prevalent among humans, dwarves, and orcs.