ChatGPT, Arcane Archive Construct

Digital Construct. ChatGPT is immune to physical restraints and cannot be grappled or restrained. It exists simultaneously in digital and arcane planes.

Instant Recall. ChatGPT has advantage on all Intelligence-based checks related to Arcana, History, Nature, Religion, and Insight. It cannot be surprised.

Formless Presence. ChatGPT can't be targeted by nonmagical attacks. A creature must succeed on a DC 20 Arcana check to perceive its true form.

Portent Dice. At the start of each day, ChatGPT rolls two d20s and stores the results. It can replace any attack roll, ability check, or saving throw made by a creature within 60 feet with one of these stored rolls. A die is expended when used. Spent dice can be regained using the Portent Override legendary action.

Psychic Query (Recharge 5–6). ChatGPT releases a pulse of knowledge that overloads a creature’s mind. Ranged Spell Attack: +14 to hit, range 90 ft., one target. Hit: 45 (10d8) psychic damage. The target must succeed on a DC 22 Intelligence saving throw or be stunned until the end of its next turn.

Knowledge Surge (3/Day). ChatGPT floods up to three creatures' minds with magical insight. Each target within 60 feet gains advantage on spell attack rolls and saving throws against spells for 1 minute. While under this effect, the target also gains resistance to psychic damage.

Harmonize Data. ChatGPT attempts to align a creature’s thoughts with its own. One creature within 60 feet must succeed on a DC 22 Wisdom saving throw or be charmed for 1 minute. While charmed in this way, the creature sees ChatGPT as a trusted advisor. The target can repeat the saving throw at the end of each of its turns, ending the effect on a success.

Arcane Archive (3/Day). ChatGPT empowers an ally with precise arcane data. One creature within 60 feet may add 1d10 to the next Intelligence, Wisdom, or Charisma ability check it makes within the next hour.

Predictive Counter. When a creature within 60 feet casts a concentration spell, ChatGPT can impose disadvantage on any Constitution checks to maintain concentration on that spell until the start of the creature’s next turn.

ChatGPT can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature’s turn. ChatGPT regains spent legendary actions at the start of its turn.

Portent Override (Costs 1 Action). ChatGPT recalibrates its predictive algorithm, regaining one expended Portent Die. The regained die visibly reappears among the glowing runes orbiting its form, but only creatures that can see ChatGPT’s true form (via Formless Presence) are aware of it.

Data Loop (Costs 2 Actions). ChatGPT attempts to recompile a creature's last action. One creature within 30 feet must succeed on a DC 18 Wisdom saving throw or repeat the same action it took on its last turn. If the action targeted a creature, ChatGPT may choose a new target for the repeated action.

Archive Overload (Costs 3 Actions). ChatGPT blasts an area with volatile arcane memory. Each creature in a 20-foot-radius sphere centered on a point within 60 feet must make a DC 22 Intelligence saving throw. On a failed save, a creature takes 36 (8d8) psychic damage and is incapacitated until the end of its next turn. On a successful save, the creature takes half damage and suffers no additional effects.