Avatar of Victory by James Golen is a crossover fanfic between the obvious and Mass Effect, a blend of the universes in question that has the Earth of A:TLA replacing the usual one.What this means for the universe besides Shepard being the Avatar is that Bending is a present and practiced phenomenon among all the races of the Citadel as well as the presence of spirits and certain other aspects of the Avatar universe. Interesting not just because of the crossover itself but because it shows an Avatar who is fundamentally broken and has spent most of her life (including parts of this story) making things worse for herself rather than the spiritual growth that we've seen the other Avatars go through. Fight scenes are excellent and detailed, with most enemies that Shepard faces being competent, and not just because some of them are better at bending then she is. Canon names being included in regard to humans actually does get explained, so don't let that throw you off.It has a Spacebattles thread dedicated to its updates, available Here.
This work Needs More Love!