Crow's Hoard of the Shadow Murder

as past of the casting the caster has to make a circular marking with a radius up to 5ft. in which they place the corvidae statue, the rations and any objects they want to store, and write any objects they wish to recover. while the spell is active no one may look at the circular marking or the spell fails (this includes the caster. it is advised to cast this spell in darkness so no curious eye can see anything). when cast sounds of a flying and cawing murder of corvidae can be heard. all items but the corvidae statue disappear and the requested items appear if they where stored before and fit inside the marking.

any items that disappear are stored somewhere in the shadowfell by the nest of a murder of shadow birds. the link to this nest and murder is trough the specific statue. if someone wants to make a statue linked with the same nest someone familiar with the original statue can recreate it by creating a new statue and succeeding on a DC20 intelligence check, with disadvantage if they are not proficient in the tools they are using, and with advantage if they have the original to copy from. if unsuccessful the statue links to a different nest and murder. one can repeat this attempt many times, making a new statue and new check every time.

alternatively to casting it the normal way, if the statue is inlaid with one or more blue gems worth 100gp, one can cast this spell with a casting time of 10 minutes and not have to provide rations or feed and store a casting in the statue. each gem worth 100gp can store one casting. when a casting is stored anyone with knowledge on how the spell works can cast it from one of the gems. if the statue has one or more spells stored in it it'll appear magical to spells and effects like detect magic, but spells and effects like identify will not give information on how it can be used.