As a bonus action, the rattok demon consumes one of the bottled souls in its possession, regaining 7 (2d4 + 2) hp and gaining advantage on all attack rolls and ability checks for 1 round. Any non-fiend who consumes a bottled soul regains 7 (2d4 + 2) hit points and must make a DC 14 Constitution saving throw. On a failure, the creature is stunned for 1 round and poisoned for 1 hour. On a success, the creature is poisoned for 1 hour.

Whenever the rattok demon is subjected to fire or necrotic damage, it takes no damage and instead is unaffected by spells and other magical effects that would impede its movement. This trait works like the freedom of movement spell, except it only lasts for 1 minute.

The rattok has advantage on saving throws against spells and other magical effects.