Venali's Fictitious Reality

You have learned enough about the nature of "real" objects that you are able to turn them into illusions. Choose an object (or subset of an object) or no larger than a 20-ft cube, which imperceptibly transforms into an image of said object, acting as if the image was created by Major Image (the object must be neither worn nor carried by another creature). You may (at your choice) interact with the object as if it was real, without expending your action.

When the spell ends, the target reverts to its true form and all additional effects end.

At Higher Levels: When you cast this spell using a spell slot of 6th level or higher and maintain your concentration on this spell for its whole duration, the effect becomes permanent and lasts until dispelled. This effect only applies for objects.

At Higher Levels: When you cast this spell using a spell slot of 7th level or higher you may target a creature within range. Unwilling targets must succeed on a intelligence saving throw or be affected by this spell for the duration, along with anything the target is wearing or carrying. An affected unwilling creature is unaware of the change and may continue to act as normal (even casting spells and making attacks), but will find its actions unable to affect other objects or creatures. Spells cast will become illusions (if they aren't already). Upon making a physical interaction with a real object (or using its action to make a successful Intelligence (Investigation) check) the creature will realize the nature of the illusion on itself, and the creature acts as if under the Etherealness spell for the purposes of movement. A creature with truesight may choose to pass this save.

As you know the true nature of this spell (by casting it), you know it cannot possibly turn you into an illusion. If cast on yourself, the effects are identical from the perspective of other creatures, but from yours, the world becomes an illusion instead.

If you are a wizard with illusory reality, you may use it while affected by this spell on objects that can fit within a 20-ft cube and not carried or worn by another creature, making it real for you, but an illusion for others (for 1 minute). Using this effect while an object is already affected causes the first object to revert to normal.