Thought Confusion

You plant a thought, or idea in the mind of a creature within 90 feet of you, causing it to truly believe what you plant into its head. The caster of this spell rolls charisma against the victim, who rolls wisdom. Whoever has the higher roll determines the outcome of the spell. If the caster's roll is higher or equal to the victim, then any thought that they can explain in 20 words or less is planted into that creature's mind. If the victim's roll is higher, they know that you have attempted to cast this spell on them, and the spell fails. Casting this spell on the same creature more than once within 3 days will cause it to have advantage on its roll. If a creature has a reason to, it may roll insight (DC 18) on itself to try and uncover if the thought is true. On a success, it knows it was an illusion. If it fails once, it may not retry the roll and will then wholeheartedly believe the planted thought. You may choose to release the thought, which will cause them to realise it was an illusion, but they will not know it was you that caused it.