Twin

Twin is the boss variant of the duplication buff, splitting the boss into two copies at the start of battle. Both copies have 50% of the original maximum health and are scaled to 75% size. The spawned SubTwin cannot chain-spawn its own duplicate. Each copy retains the full boss ability set, effectively doubling the boss's action economy while spreading its health pool across two targets.

Twin bosses are among the most challenging elite encounters in the game. Two copies of a boss means twice the special abilities, twice the area denial, and twice the pressure on your team's positioning. Many boss mechanics that are designed to be manageable when coming from a single source become overwhelming when doubled. A Twin version of a boss with summon abilities can flood the battlefield with adds from two spawn points simultaneously.

The core strategy is identical to fighting Twin enemies but with higher stakes: kill one copy as quickly as possible. Burn your strongest cooldowns and burst abilities on the SubTwin first since it has less health. Once one copy is down, the fight becomes a standard boss encounter with a half-health boss. Area-of-effect damage that can tag both copies provides massive value. Position your team to avoid being caught between both copies, and use terrain or walls to limit their ability to flank you. Bring enough healing and sustain to survive the intense opening rounds before you reduce the fight to 1v1.