You gain access to a game-like system to manage your power(s). By default, you have access to a basic system that includes attributes and the ability to grow by gaining experience. You gain experience by completing quests or defeating enemies (does not need to involve killing them) and can increase your attributes by training. How the system works in details depends on the user, you can either create a custom gamer system for yourself or choose a version from any franchise/fictional work you know, gaining all its features, (note that you can not use this to gain an Instant dungeon) two people with this power can have systems that work differently.
This power will interface with other abilities you choose. As you use them, they will grow in strength and will unlock new aspects. While your growth is not limited, the stronger an ability is the harder it will be to improve it.