Not all magic is equal. Even hard work and determination is no match for skills passed on from generation to generation, each time being built upon and growing stronger. These old magic families have hoarded their secrets with every generation, using them to get ahead where they could - or leaving a mess for their progeny to deal with as soon as they have passed.
Legacy delves into the people who have had the responsibility of generations passed down to them and how they use their family's magic with the time they have left. This generation knows that eventually the End will eventually come for them and that they might not have much time to stop it. If they want to stop it at all.