Most Terrifying Superpower

Fairly self explanatory-what do you think is the scariest/most terrifying super power? Like if someone could only have one power to freak you the hell out what one would it be? Super strength? Super speed? Matter manipulation? Blood bending?

Telepathy: Mind control

Reality Warping and Mind Control

Space-time manipulation

Persuasion/Voice.

Reality Warping, in real life nothing could stop you, that would be terrifying imo.

I've seen Hollow Man enough times to say invisibility.

Not knowing where, when, and what the person might do, the anticipation combined with your imagination would make your own mind a very scary place.

Shapeshifting would have a similar effect, I suppose.

@gunmetalgrey: add my vote in that

Those 2 powers are the absolute best way to make your enemies or allies or anyone really fear for their lives for as long as you live

Demon's powers Raven from Teen Titans.