You summon any one creature residing in any plane or demiplane to any unoccupied space within the spell’s range. This spell can be used to summon vestiges or aspects of fiends, celestials, deities, demigods, or gods. Furthermore, if the creature is a vestige, it becomes conscious and has truesight, blindsight and telepathy out to 120 feet.
The creature summoned will behave in a manner of its own will, and cannot be controlled in any way by the caster of this spell. The summoned creature appears with any items or equipment it was carrying at the time the spell was cast. This spell cannot be used in any way to return the creature to its prior location.
This spell must be used to summon a living creature and cannot be used to resurrect a creature from the dead. For the purposes of this spell, a creature is designated as “alive” if it has never had the connection between its physical body and eternal soul broken. For example, if the creature you are attempting to summon is a dwarf that has experienced death (e.g., failed three death saving throws), and its soul has crossed over from the Prime Material Plane to its eternal resting place in the Plane of Mount Celestia, the spell would fail. If that same dwarf physically travelled to the plane of Mount Celestia (intentionally or not) but has not died, the spell would succeed. DM’s discretion may be needed to decide the outcome of this spell for creatures that defy this convention, such as certain undead creatures, deities, or creatures that otherwise cannot experience death naturally.
* - (a diamond worth at least 1000 gp; the true name of the creature being summoned spoken in the creature’s native language)