Two-Headed Troll

Easily Misled — The two-headed troll takes a –4 circumstance penalty to their Perception DC against Deception checks.

Independent Brains — Each of a two-headed troll's heads rolls their own initiative and has their own turn. Neither head can Delay. At the start of a head's turn, that head gets 2 actions and 1 reaction. Each brain controls one arm, but both can move the legs. Any ability or item that would sever a two-headed troll's head (such as a vorpal weapon) doesn't cause the two-headed troll to die if they still have their other head, but does cause them to lose the turns, actions, and reactions of the severed head. Mental effects that target a single creature affect only one of the troll's heads.

Regeneration 20 (Deactivated by Electricity or Fire) — This monster regains the listed number of Hit Points each round at the beginning of its turn. Its Dying condition never increases beyond Dying 3 as long as its regeneration is active. However, if it takes damage of a type listed in the regeneration entry, its regeneration deactivates until the end of its next turn. Deactivate the regeneration before applying any damage of a listed type, since that damage might kill the monster by bringing it to Dying 4.

Head Regrowth — A two-headed troll's regeneration can regrow a severed head. After regaining Hit Points from regeneration, the two-headed troll attempts a DC 10 Flat. On a success, a missing head is fully restored. If a two-headed troll loses their last remaining head, they die immediately.

Reactive Strike —

Collaborative Chomp — The troll makes a claw Strike and Grabs a single target. If both are successful, the other head can use their reaction to make a jaws Strike against that creature.