Written for @spnpolybingo​​​​ Title: The Beast WincestielPairing(s): Sam/Dean/Cas, Abaddon/Naomi, Sam/Dean/Cas/Abaddon/NaomiWord Count: 2kRating: R/MatureTags: poly relationships, slash, femslash, het, mentions of off-screen sexual relationships and acts, sentientbestiality, threesome, fivesome, siblingincest (Cas is Sam and Dean’s brother), crack, Cas’ long tongue@spnpolybingo Square: Abaddon Castiel Dean Naomi Sam AO3 Link A/N: I’m not really sure how this came …