The Conjuring

You attempt to communicate to a creature from the spirit world. As part of casting the spell, you must name a creature that you will be trying to communicate with (no name will result in a random spirit manifesting in your presence). Make an Arcana check of 20 minus 2 for each person within your presence, or minus 1 if they do not know the spirit.

On a success, the spirit is pulled from its place in the spirit world and into a space within 10 feet of the caster. It can answer any questions that it knew in life, or learned in death, but it is not omniscient. You may choose to bind the spirit to an object or location as an action. The spirit must then make a charisma save or be bound to that location or object until it is dispelled willingly by the caster, or by a dispel magic (or similar) spell.

On a failure, an spiritual entity of the DM's choosing will manifest. The entity can attempt to decieve the caster into believing that the spell was a success, and can answer questions as if the spell was successful. The creature has advantage against a charisma save to be bound to an object, and can choose to inhabit a living host if it chooses. The subject must then make a charisma saving throw against the entity's spell save DC or become possessed. The caster can choose to end the spell at any time, but cannot dispel the entity if it tethers to something or someone.