Rotate anything 90 degrees.

You can permanently rotate anything you touch exactly 90 degrees.

This can be clockwise, counterclockwise, left, right, forward, back.

Rotate a car

Permanently put a person on their back

Topple a building if you really wanted to, but good luck not dying.

Not necessarily line of sight based, but you gotta touch at least a part of what you want to rotate. So, if you wanted to rotate a person’s heart you gotta touch the torso at least. Objects rotated also maintain their momentum, so if you were shot at, you could rotate the projectile 90 degrees upward.