Super mario
Super Mario World

390
Kingdoms: Mushroom, Ghost, Dry, and Koopa.
There exists a legendary Mega Hammer that lay in the forest in the center of all the kingdoms. The hammer, able to shapeshift into any item imaginable, has yet to choose it's holder. Once it chooses someone it will lighten it's weight. But anyone who it rejects or senses evil in, will increase its weight greatly.
You are the chosen one. But be careful, for everyone in this world knows of the hammer. and once it goes missing, they will target you if you aren't careful.