You write on parchment, paper, or some other suitable writing material and imbue it with a potent illusion that lasts for the duration.
To you and any creatures you designate when you cast the spell, the writing appears normal, written in your hand, and conveys whatever meaning you intended when you wrote the text. To all others, the writing appears as if it were written in an unknown or magical script that is unintelligible. Alternatively, you can cause the writing to appear to be an entirely different message, written in a different hand and language, though the language must be one you know.
Should the spell be dispelled, the original script and the illusion both disappear.
A creature with truesight can read the hidden message.
This spell creates an invisible, mindless, shapeless force that performs simple tasks at your command until the spell ends. The servant springs into existence in an unoccupied space on the ground within range. It has AC 10, 1 HP, and a Strength of 2, and it can't attack. If it drops to 0 hit points, the spell ends.
Once on each of your turns as a bonus action, you can mentally command the servant to move up to 15 feet and interact with an object. The servant can perform simple tasks that a human servant could do, such as fetching things, cleaning, mending, folding clothes, lighting fires, serving food, and pouring wine. Once you give the command, the servant performs the task to the best of its ability until it completes the task, then waits for your next command.
If you command the servant to perform a task that would move it more than 60 feet away from you, the spell ends.