Diviners are sacred weapons forged from orihalcon that Grim Angels wield, appearing most prominently in Riviera: The Promised Land. There are six known existing Diviners: Ein's Einherjar, Ledah's Lorelei, Malice's Skadi,  No. 367's Skadi P-2 (a prototype appearing in Yggdra Union), Primea's Proto-Skadi (a prototype appearing in Knights in the Nightmare) and Mjolnir (神圏マセラマティ, a replica of it appearing in Yggdra Union). Diviners become part of a Grim Angel's very being, and require that the wielder sacrifice some piece of themselves to become one with their Diviner. An example of this is Ein's sacrifice of his wings.