Swarm of Young Mind Flayers

You summon a group of 10 young mind flayers from a colony who's ruler is dead. The mind flayers have breathed in gases that have caused them to hallucinate. They see you as their dead ruler, and serve you loyally. The spell ends when their hit points reach 0. The mind flayers have 60 hit points (6 hit points for each mind flayer, 60/10). As a bonus action, they can attack using their psionic powers. This will deal 10d4 psychic damage.