The Delosian Trust is the main bank of Delos, located off of Eastern Ithmia Street. The institution is one of the largest and most popular on Sapience, which probably lends itself to adoption of special business practices when dealing with borrowers, debt, and abandoned accounts. Accepting any and all account holders, its fees are 400% higher for withdrawing and transferring gold. The Delosian bank periodically has in its possession many derelict vaults, unlockable with keys which the bank is periodically willing to sell off in order to regain its losses.
Keys can only be acquired during promotions via otherworldly means.
When one has a complete key bank in Delos can be visited, where a set of sixty-four abandoned vault doors await to be unlocked (in an 8x8 grid).
The prize list that is hidden behind the locked doors is unchanging, but which door they are behind is subject to change. The contents of derelict vaults may include raw credits, scintillating gems, decorated sleeves for mystical cards, Mayan crowns, phials of shimmering ink, pages for the Tome of Muses, gift boxes of varying value, and more.
Before one chooses which door to open what has already been won is evident from already opened doors. When there are no prizes left on the board the bank will resets the contents to full once more.
The board resets when the special prize is claimed, as well as every in month on the 1st.