What do you think of Enchanted by Queen Nan? It's the best AU Once story I've read so far.
Enchanted by Queen Nan is wonderful, too bad it’s still WIP. :(Since you’re talking about FTL AU, here’s some of my favorites:All We Seem by Raininthesky (WIP)
The Tale by shane’svoice (Complete)
Paint It In Black by wily_one24 (Complete, M)
[thefemslasher]
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I’d go with these personal favorites
In A Land Far Far Away [FTL AU this has been the first really]
I Could Give You My Apologies [Modern day AU]
A Bounty For a Witch’s Heart. [the build up is really great. FTL AU. However, the author doesn’t update often]
Pointed for Vampire AU
Once Upon a Zombie for Zombie Apocalypse AU
Aut Vincere Aut Mori for Historical AU
I second the Snow Queen mentioned by Gift of Amber
a new one by Halfwayhome, a Curse AU, Once in a Lifetime
[impeccabledis0rder]