Berserkers are a creature type generally associated with aggressive combat, attacking, and throwing caution to the wind in favor of quick damage. They don't share a single mechanic, but many Berserkers reward you for getting into the red zone early and often.
Some notable Berserkers include Magda, Brazen Outlaw generating Treasure when Dwarves become tapped, Arni Brokenbrow using Boast to increase his power, and Kardur, Doomscourge forcing opposing creatures to attack.
