Gryntard’s Feathery Reliever

What's it called? Gryntard’s Feathery Reliever (in short, GFR)

What does it do? As the name implies, the spell is a 'weight reliever'. It will make items you carry lighter and easier to carry, reducing your burden. As for the amount of weight, it seems to be dependant on skills, and at a maximum, would reduce the item to a quarter of its original heavyness.
This 'weight watcher' has interest as wizards tend to have problems with burdens (due to medium to low strength), but I personally would find it too much of a nuisance to continually keep reducing the weight of a weapon or armour I'm wearing.
The spell can be cast repeatedly, and that presumably makes the duration last longer. It is also important to note that it only reduces the weight of an item, not of the things that item may carry inside (so a cast on a backpack full of components isn't going to make much of a difference). For more information about the spell, take a look at Sekiri's site, who did some research on it long time ago.

Where is it? It flutters and floats in the Invoakatyons in thee Mysterie of Wynd grimoire, at the Unseen University Library, very near the entrance.

What does it require? A silver necklace and a feather (this last item is consumed, methinks. I'll have to check it tomorrow).

What skills do I need? Summoning, Air, Binding, Channeling

Has it worked? A correct output should be something like this:

You prepare to cast Gryntard's Feathery Reliever on xxx (heavy item).
You tickle xxx with the feather.
You call upon the powers of air.
You wrap the silver necklace quickly around the air spirit, chaining it to xxx.
You force the essence of the feather into xxx.
xxx seems a bit lighter than before.

Help Information:

Gryntard's Feathery Reliever - make an item lighter.

Gryntard's Feathery Reliever is a miscellaneous type spell that will reduce the weight of an item you are carrying.