Deus Ex Dia
Power of the 9th Gate
based on Pyschopomp 3 – Unbarred Entry – Except it only unlocks doors.
Anubis foreseeing the need for his son to gain access to places he traveled to the Ninth Gate before the city of paradise, upon reaching the gate he was beset by Dahaka the scourge of the sands. The Dahaka made a deal with Anubis to crack a shard off of his own key ring for his son in return for an unnamed favor to be named at a later date of equal value to the key shard.