From birth, Lily Potter knew she was different from the other witches and wizards at Hogwarts, she didn’t have as much magical power as others did, but what she lacked in power, she made up for in strength, courage, and ferocity. Those three determining factors combined and created a astrophysical manifestation of her inner beast, the mighty tiger. With this power, Lily decided to push all the love she had for her son into her spirit and transferred it into him just before Voldemort broke in.
With the power of a tiger, Harry Potter will change the world, to save it, or destroy it is up to him.