You can create a monster based on the sins of the selected person. Their strength correlates to the amount of good and bad sins they committed in their life based on personal ideology. It's power will be capable of countering the chosen target.
The Monster's intelligence and strength scale directly to the number of sins the target selected. You can target them from anywhere as long as you know their name. If they committed enough sins, the Monster would be able to outsmart their enemy like some kind of 5D chess. If the Monster defeats the target, they stay and help you for other things.