I know of your powers but I have power also.

He says that she is going through 'a confusing time', telling that he knows of her powers.

She didn't really look like a mutie at all, despite what he knew of her hidden powers.

If there was anyone who hadn't known of Lan's powers before, they certainly were in no doubt of them now.

"Even though they knew of your powers?"

Janeway and the others did not know of the Skedan's formidable telepathic powers.

She had been the closest friend of Olympias, who had known of her virgin powers.

"They now know of our other powers, but must think they have us isolated, so that in time we must do their bidding."

Knowing of the sword's magical powers, she declares that only the winner of a tournament may claim her hand.

"If you had known of the medallion's powers, you would not have lived long enough to travel through time."