Dream Sphere

As you cast this spell, a 30 ft sphere forms, with you in its centre. The sphere has an AC equal to your spell cave DC and HP equal to ten times your level. The wall of the sphere cannot be passed, neither from the inside nor from the outside.

As the sphere forms, every creature in its area (except the spell caster) has to succeed on a Wisdom saving throw. On a success, the creature is pushed out of the sphere. On a failure, the creature is caught within the sphere.

The spellcaster can transform the terrain inside the sphere to its will. Every transformation is merely an illusion and does not change the actual environment. The illusion cannot hurt the creatures within the sphere. Every damage dealt within the sphere is psychic damage. Every attack roll made inside the sphere gains advantage or disadvantage at the spell caster's will.

On a failed Wisdom saving throw, the creature also thrifts into a dreamlike trance. During this trance, the creature is stunned and the creature is having dreams/nightmares controlled by the spell caster. The creature awakes when it takes damage and can reroll the saving throw every time it takes damage again.

The sphere dissolves itself when you command it or after 10 minutes, leaving the creatures inside the sphere sleeping. If they are standing, they fall prone and wake up.