at will

He stood for a long moment looking down at Will.

It was great to see them move the ball at will.

She had not yet learned how to find that door at will.

He seemed to be looking at Will with his left eye- can't do it.

The game does not allow the player to do this at will.

It was also said that he killed people at will.

This also means that new words can be created at will.

They could also take the form of any animal, human or other thing at their will.

Jack sat back in his chair and looked at Will with new eyes.

They are able to move among all the lower planes at will.