Ahaha, that is pretty much what Coil has, isn’t it!
It still has the potential to feel rather cheaty, depending on the scale of the power (which you may recall is currently my biggest question about Coil, trumping even things like “can we trust him?”).
I think a medium scope would be the best – powerful enough to make smaller parts of the plan, like the gallery heist, go his way, but not enough to just say “I’ll successfully take over the city” and wait for that to come true with minimal effort.
I’d also like it if there are weaknesses to his power, such as the number of people involved limiting the power’s potency.