Aethryon the god or creativity.

Master of Infinite Forms. Aethryon can alter its form at will. At the start of each of its turns, it gains resistance to two damage types of its choice.

Aura of Inspiration. Creatures of Aethryon’s choice within 30 ft. gain advantage on attack rolls and ability checks. Enemies instead suffer disadvantage on saving throws against illusion and enchantment effects.

Reality is a Canvas. Aethryon ignores material components for spells and can cast spells even while incapacitated unless unconscious.

Multiattack. Aethryon makes three Brushstroke of Creation attacks or uses Imagination Unbound.

Brushstroke of Creation. Melee or Ranged Spell Attack: +17 to hit, reach 10 ft. or range 120 ft., one target.
Hit:(17d8 + 12) force damage plus 9d8 psychic damage. The target must succeed on a DC 25 Wisdom save or become “rewritten” (see below).

Rewritten Effect: The target’s form partially distorts—speed halved, disadvantage on attack rolls, and vulnerability to psychic damage until the end of its next turn.

Imagination Unbound (Recharge 5–6).
Aethryon manifests raw creativity in a 60-ft radius. Choose one effect:

• Living Sculptures: Summon 3d4 constructs.
• Abstract Cataclysm: Enemies take 10d10 psychic damage (Int save 21 for half)
• Dream Shift: Teleport all creatures of Aethryon’s choice within the area up to 120 ft.

Masterpiece Manifestation (1/Day).
Aethryon creates a colossal living artwork (DM’s choice: dragon made of paint, ink titan, glass phoenix, etc.). This creature acts immediately after Aethryon and lasts 3 rounds.

Creative Surge. Aethryon casts a spell of 5th level or lower.

Inspire Greatness. One creature within 60 ft. gains +1d12 to all rolls until the end of its next turn.

Rewrite Fate. When Aethryon or an ally fails a roll, it can reroll it and take the new result.

1. Illusory Shift. Teleport up to 60 ft.
2. Cast Spell (Costs 2). Cast an at-will spell
3. Fracture Reality (Costs 3). One creature takes 12d8 psychic damage and must make a DC 25 Int save or be stunned until the end of its next turn