I have a couple of Thor/Loki reincarnation fics for you.
Cumulonimbus (http://norsekink.livejournal.com/8802.html?thread=18001250&#t18001250) {PG-13 |Thor!AU |Reincarnation |WIP} The assault on Jotun failed miserably and Thor dies.
falling like a flip of a coin by paxlux (http://archiveofourown.org/works/269232) {NC-17 |Long |Canon!AU} where both Thor and Loki are reborn as mortals who fall in love; they do not remember their days on Asgard but feel some sort of connection.
no subject
Cumulonimbus (http://norsekink.livejournal.com/8802.html?thread=18001250&#t18001250) {PG-13 |Thor!AU |Reincarnation |WIP}
The assault on Jotun failed miserably and Thor dies.
falling like a flip of a coin by paxlux (http://archiveofourown.org/works/269232) {NC-17 |Long |Canon!AU}
where both Thor and Loki are reborn as mortals who fall in love; they do not remember their days on Asgard but feel some sort of connection.