Chondra's Insufferable Specter

You create a mischievous, illusory specter that resembles a transparent copy of yourself. As an action, you can curse a creature within range with your devilish creation. For the next day, the specter is bound to the cursed creature and is unable to move further than 15 feet away from it. After the creature is cursed, the specter begins to torment the creature in the following ways:

• The specter will knock over any object the cursed creature picks up. It can only knock over objects that weigh 10 lb or less.
• Whenever the cursed creature speaks, the specter mimics exactly what they said shortly afterward.
• Every 5 minutes, the specter taps a part of the cursed creature's body.

The specter is seemingly nonexistent to anyone except the caster and the cursed creature, as they are the only ones who can sense it in any way. Other creatures can sense the specter's presence with a Detect Magic or See Invisibility spell. The specter fades away at the end of the spell's duration, though you can prevent this by casting this spell again before the specter fades. The specter will also fade if you voluntarily dispel it, or if a Remove Curse spell is cast on the cursed creature. When the specter is dispelled, it will let out an agonizing, ear-piercing screech as it slowly fades away.