Crondor's Marvellous Sequestration

What's it called? Crondor's Marvellous Sequestration (in short, CMS2).

What does it do? This spell will allow you to store a staff in a parallel set of non-euclidian dimensions, while still being easily retrievable from there through the mediation of a star sapphire ring, created by the same spell.
As may be evident, it proves quite useful, specially for those of us who don't employ staves as a weapon but need to go back to them from time to time for some spell castings and octogravings. Being as they usually are quite heavy stuff, it is very convenient to have them hidden nearby without burdening you and always accesible.
As to setbacks of the spell, the main one would be that you have to cast it yourself and it only works on the staff it was cast on. The ring skill requirements (over 280 bonuses) are quite demanding too, and the guild points spent per cast (350), staggering.

Where is it? It is one of the new (in fact, the last recorded here) Sto Lat artificer spells, and lies inside the fabled Thee Secrets of Artifyce and Crafte grimoire.

What does it require? The focus of an octogram and a staff (on which you cast the spell). Then, a sapphire ring (blue crystal rings count too, but check before that it has run out of charges) and a handful of purple powder, both of which are consumed in the process (if succesful, the ring will be 'transformed' into a star sapphire one).

What skills do I need? Staff, Ring, Convoking, Enchanting, Binding

Has it worked? A succesful output reads something like this:

You prepare to cast Crondor's Marvellous Sequestration on the xxx (staff).
You gesture with the staff, tracing out the flaws in the world around you where a little pressure might let something slip through to another plane.
You wrap your mind around the sapphire ring, reshaping it into an idealised form and tracing strange fantastical constellations of stars on its surface.
You bring the staff and the ring together, letting the band slip down the shaft and wrap snugly around it.
You sprinkle the purple mineral powder over your staff and sublimate it with a flicker of magic, spinning it out into octarine threads.
You wrap the threads of enchantment around the staff and ring, binding them indissolubly to one another.
The ring, transmuted into a gleaming star sapphire set in an engraved silver band, slides easily off the staff.

Help Information:

Crondor's Marvellous Sequestration - Places a wizard's staff between here and there.

Crondor's Marvellous Sequestration is a zeroth order miscellaneous spell which turns a sapphire ring into a mystical star sapphire with an arcane connection to the caster's staff, allowing him to slip it into a pocket of some other reality for awhile and retrieve it later.

Be aware that there are some hazards associated with this spell.

Notes:

After a positive cast, a new magic item is created: a star sapphire ring. It looks like this:

This immense faceted sapphire sits clasped firmly in the setting of a broad silver band. A star formed from silver light seems to hover just beneath the surface of the gemstone, shifting this way and that as it tilts, and the band has been engraved with constellations of thickly clustered stars.
The star sapphire is empty, ready for a staff to be stored there. / Within the star sapphire, you can see a xxx (staff), ready to be retrieved.
It has the hazy octarine sparkle of a magical talisman.
It is in excellent condition.

Once made, you can 'store' your staff inside it, or 'retrieve' it after you've sent it there. Both actions are skill-checked, and aside from failures, you can even end up with the staff coming out and hitting you. The normal failure/success messages are:

>store staff between here and there (you have to be holding it):

You prod vaguely at the air with the xxx (staff), but don't manage to shift it out of this plane. / You lift your xxx (staff) and twist it slightly to align it with the currents of elsewhere. You twist an arcane thread around it, attaching the other end to your star sapphire ring as its anchor to this plane, and release it to drift between here and there.

>retrieve staff from elsewhere:

You tug on the arcane thread attached to your staff, but it refuses to return to this world. / A xxx (staff) hurtles towards you from a great distance, tumbling end over end. You try to catch it, but you mistime your grab and it smacks you across the head. / A xxx (staff) sails through a hole in the fabric of space and time and lands neatly in your inventory.