Zeitgeist

Darting Escape (Darting Form Only). The zeitgeist can take the Dash or Disengage action as a bonus action on each of its turns.

Timewarped Body. At the start of each of the zeitgeist's turns, roll a die. On an even roll, its body stretches and speeds up as it takes on a darting form. On an odd roll, its body becomes more solid and slows down as it takes on a sluggish form. Its statistics are the same in each form, except as noted here. * Darting Form. While in a Darting form, the zeitgeist's Armor Class increases by 2, and its speed is 40 feet. * Sluggish Form. While in a Sluggish form, the zeitgeist has resistance to bludgeoning, piercing, and slashing damage from nonmagical attacks, and its speed is 20 feet.

Multiattack. In its darting form, the zeitgeist makes three darting rend attacks. In its sluggish form, the zeitgeist makes two sluggish slam attacks.

Darting Rend (Darting Form Only). Melee Weapon Attack: +7 to hit, reach 10 ft., one target. Hit: 6 (1d4 + 4) slashing damage plus 7 (2d6) force damage.

Sluggish Slam (Sluggish Form Only). Melee Weapon Attack: +6 to hit, reach 5 feet., one target. Hit: 12 (2d8 + 3) bludgeoning damage plus 7 (2d6) force damage. If the zeitgeist scores a critical hit, the target is also knocked prone.

Tormented Scream (Recharge 5-6). The zeitgeist cries out, releasing some of its internal torment in a 30-foot cone. Each creature in that area must make a DC 15 Intelligence saving throw, taking 21 (6d6) psychic damage on a failed save, or half as much damage on a successful one.

Rewind (Recharge 4-6). When the zeitgeist takes damage or when it starts its turn afflicted with a condition, it can rewind time around it, preventing the damage or undoing the condition. It can use this reaction even while paralyzed or stunned.