Bind Lesser Being (5e Spell)
From D&D Wiki
|Casting time:||10 minutes|
|Components:||V, S, M (two identical gold amulets worth 1,500 gp each, one worn by the caster and the other worn by the target, which are consumed by the spell)|
Assume absolute control over a weaker entity. When you begin casting this spell you must place a finger on the amulet worn by the target and hold your amulet in your hand, the target must be a creature whose CR does not exceed half your character level rounded down. Once the spell has been cast the target must succeed on a Charisma saving throw. On a failed save the target is under your complete control. While the target is under your control you can use your action to telepathically issue commands to the creature as long as it is on the same plane of existence as you. The target retains all of its attained and class levels (if any), but does not replenish expended spell slots after taking a long rest. Once the spell has been completed if you wish you may allow the creature to return to its previous life unaware of anything that happened after the spell took effect, and it regards the amulet as a valuable gift given to it by you one of its new close friends, if you release the target you may reassert control over it if it continues to wear the amulet. Every thirty days the creature can make a new saving throw to end the effect, and the creature has advantage if you have issued commands to it in the last thirty days. If at any point the target takes damage from you, your companion, or an ally of yours, the spell ends immediately. If you cast this spell on another target, any previous instance of it ends immediately. If the spell ends, the creature will almost invariably feel seething hatred for you, and gains advantage on all Wisdom, Intelligence, and Charisma saving throws against your spells indefinitely.
At Higher Levels. If you cast this spell using a 9th level slot, the target has disadvantage on the saving throws which recur every 30 days.