Azathoth's Uncanny Effigy

By arranging the materials for the spell and calling upon ancient spiritual magic and speaking the targets name you create a small effigy of the humanoid that it is spiritually linked to, the effigy looks like a doll made in the likeness of the target and is 6 inches tall. As a bonus action the caster can cut off the spiritual connection to the target ending this spell early, a remove curse spell cast on the target also ends this spell. When the spell ends the effigy and the materials it was made from dissolve into worthless ash. 

By casting this spell with a 3rd, 4th and 5th level spell slot you are able to use the effigy to perform different actions and interact with the target in different ways (the person using these actions and interacting with the target do not need to be the caster however they need to be holding the effigy).

3rd level: You are able to speak to the target through the effigy from any distance, the target hears the words in its head and can respond mentally, however this communication cannot extend to different planes of existence. As an action you can determine the direction that the target is from you but not the distance, this action fails if the target is on another plane of existence. 

4th level: When you cast this spell you create 5 silver needles each 4 inches in length. As an action you can pierce the effigy with one of the needles forcing the target to make a charisma saving throw, taking 3d10 necrotic damage on a failure or half as much on a success and with a success the needle snaps, once used the needle cannot be removed from the effigy. once all of the needles are used the spell ends and the needles turn into ash long with the effigy.

5th level: When you cast a spell on the target that requires a saving throw the target cannot gain advantage on the saving throw. You can also cast healing spells of 5th level or lower on the target through the effigy. Additionally the damage caused by the needles created by the spell increases to 4d10 necrotic damage and you create 10 needles instead of 5.