To issue a call to convene. (Merriam – Webster)
To command by service of a summons to appear in court. (Merriam – Webster)
To call upon for specified action. (Merriam – Webster)
If you summon someone, you order them to come to you. (Collins Dictionary)
If you summon a quality, you make a great effort to have it. For example, if you summon the courage or strength to do something, you make a great effort to be brave or strong, so that you will be able to do it. (Collins Dictionary)
To order someone to come to or be present at a particular place, or to officially arrange a meeting of people. (Cambridge Dictionary)
The eleven best demons to summon.
Paimon a demon king riding in calm style his camel.
What do you do if you receive a summons or a subpoena?
A summon is a document that asks someone to appear in court.