Over the course of an hour you may attempt to bind a non-Humanoid creature within 10ft into your service. The target creature must make a Charisma saving throw, or be bound to you until the binding is dispelled, Unconscious creatures have disadvantage on this save, the creature may also choose to fail the save. Creatures bound in this way are only obliged to obey your commands when summoned with the second half of the spell.
When you have at least one creature bound with this spell, as an action you may cast the spell to summon one bound creature with a one hour concentration. The creature takes it's turn immediately after yours, and it obeys any verbal commands you issue to it (no action required by you). If your Concentration is broken, the creature does not disappear, instead you lose control of the creature, and it's actions are determined by the DM
* - (Silver Chain worth 1000g)