A powerful mage drags a god down to fight for him against the god's will, and the god remembers it.
The second of the three summoning types in Crawler Coolie's deity note in The Dungeon Anarchist's Cookbook: a powerful mage summons the deity to fight for him for a short time. It is done against the god's will, and they are usually pissed when it happens. Like the others it needs a physical vessel, usually a mob, and like the others Coolie reports it ends with the summoner dead.
The coerced form of god-summoning, listed among the three to avoid.