Conjure Lesser Yugoloth

You summon a yugoloth of CR 5 or less. The yugoloth can make a DC 17 Wisdom saving throw to resist being summoned. On a failure, the yugoloth appears in an unoccupied space within 25 feet of you.

The yugoloth will perform one task for you and demand payment in return. The greater the task you assign the yugoloth, the greater the payment it requires of you. Once the negotiations are concluded the yugoloth will teleport away, perform the task, and then return to you if possible. You must repay the yugoloth within a year and a day. Otherwise you are in breach of contract, and the yugoloth will come back and claim your soul as payment. If the yugoloth breeches contract for any reason you are safe, but that does not prevent the yugoloth trying to claim its prearranged payment anyway.

At higher levels. When you cast this spell using a spell slot of 6th level or higher, the CR of the yugoloth summoned increases 1 CR for each slot level above 5th.