Wings' Necklace

Wings' Necklace plays a major part in Super Mario: The Dream Crystal. It grants Wings (and only him) the power to create strong force-fields and gives him the ability to shoot blasts through his hands and eyes. This Sacred Treasure represents Courage. Princess Rosalina created that for specifically for Wings, since he was the 2nd Special Soul. Part of her power rests within it.

Throughout the Story
Wings had no idea what his necklace was capable of, until he met Toadce and she explained it to him. He had no idea how to use it, and sometimes it would do things on it's own (E.g: Creating force-fields at dangerous times).