Summon Celestial
You summon a creature that has the celestial trait and whose level is 5 or lower to fight for you. The GM might determine your deity restricts the specific types of celestials you can summon in certain cases. For instance, Calistria doesn't typically allow her followers to summon aeons.
Heightened As listed in the summon trait.
Traits
An action with this trait requires a degree of mental concentration and discipline.
You must physically manipulate an item or make gestures to use an action with this trait. Creatures without a suitable appendage can't perform actions with this trait. Manipulate actions often trigger reactions.
Spells with the summon trait can conjure creatures, typically ones with a particular trait. Such creatures can be found in Monster Core and similar books. Unless noted otherwise, the creature must be common, it gains the summoned trait, and it must appear in an unoccupied space in range large enough to contain it. The highest level of creature the spell can summon depends on the rank of the spell, as listed below. The spell can still summon a creature of a lower level if you so choose. These rules apply only to spells that have the summon trait; other spells that call or conjure items or beings but that don't have the trait, like summon instrument, work as explained in the spell.