Colossus of the Astral Plane

You call upon the primal forces of magic, evoking the grandeur of the astral plane. As your voice booms, a massive gateway opens behind you, unleashing a titanic figure of pure astral energy. The colossus, towering above all in its majestic form, stands ready to aid you in battle.

An enormous phantom colossus, standing approximately 30 feet tall, manifests behind you. Its presence fills the area, imbued with immense astral power. It carries the same weapons you wield and takes on the form of whatever you wished for.

While the spell is in effect, the colossus bestows powerful benefits:

• Majestic Presence: The presence of the Astral Colossus imposes disadvantage on attack rolls made against you by creatures within 30 feet of you. Its awe-inspiring stature and astral radiance make it difficult for enemies to focus their attacks.
• Devastating Strikes: Whenever you make a melee weapon attack, the colossus delivers a simultaneous melee weapon attack against the same target. The colossus's attack deals additional damage equal to twice your spellcasting ability modifier + proficiency bonus.
• Astral Surge: As a bonus action, you can call upon the Astral Colossus to unleash a powerful surge of astral energy. Each creature of your choice within 30 feet of the colossus must make a Constitution saving throw. On a failed save, a creature takes force damage equal to your spellcasting ability modifier and is pushed 15 feet away from the colossus. On a successful save, the creature takes half damage and isn't pushed.
• Astral Annihilation: As an action, you take full control of the colossus and unleash a deadly flurry of attacks upon your enemies. Choose a target 20-foot-radius sphere. Each creature in that area must make a Dexterity saving throw. A target takes 8d8 force damage on a failed save, or half as much damage on a successful one. After that, it explodes in a last Astral Surge, ending the spell.

The Astral Colossus has no physical presence, hit points, or Armor Class. It exists solely as a visual and thematic manifestation, invoking the awe and fear of those who witness its imposing form. Attacks against the Astral Colossus automatically miss, and it cannot be targeted by spells or effects that require specific physical interaction.

At Higher Levels: When you cast this spell using a spell slot of 7th level or higher, the additional force damage dealt by Astral Annihilation increases by an additional 1d8 for each slot level above 6th.

Note: The Astral Colossus is an ephemeral and illusory projection, representing the raw power of the astral plane. It cannot be harmed, damaged, or interacted with in any physical way by any means other than the abilities granted by this spell.