Larian Studios Forums Divinity: Original Sin 2 - The Modding Dungeon Divinity - Original Sin 2 - Modding General Need help turning summon into ai ally

You will have to use scripting for this.

To detect when such a summon has been created, you can use the Osiris CharacterEnteredRegion event, checking whether that character is a summon and whether it has the root template of the summon type that should be AI-controlled.

You could try turning the summons into NPCs (CharacterMakeNpc Osiris call). NPCs are AI-controlled. I don't think they will keep following you after you made them an NPC (they will still be allied though), so you may have to force them into following the summoner.