User blog comment:The Dark-Eyed One/Conceptual game elements - up for discussion!/@comment-26536672-20160720234532

For those curious about my methodology, I generally try to stay true to what I interpret as Dishonored's unique and varied array of powers, namely that each power have a common theme (which is obvious) and that each power remain very distinct. In essence, though the functions and uses of different powers may overlap, their themes, aethetics, and mechanisms of action remain quite distinguishable.

Blood Ox, my main concern with your suggestion when adhereing to my method is that it is basically just a combination of Devouring Swarm and Possession. What I would otherwise do is give Possession a mechanic that allows you to possess a rat and--provided it is in or near a swarm--choose whether or not to have the rest of the rats of the swarm follow your lead to an enemy or corpse.