Bone masks and other trappings

Some witch spells require a thing called a bone mask. The shape itself is just an animal mask, but in this case the inside lining is etched with fey script.

Most similar to how infernal magic works, the fey script is to infernal like the various forms of Chinese and Japanese are in our world: visually similar to the untrained eye, but completely different.

The masks themselves are used in the more ritualistic magics, things that require amplification and are less practical in their application. For example a bone mask would have been used when Decadencey was first made to be moved.

A witch usually only crafts one bone mask in her/his life, though bone talismans can be used to further amplify and some masks will gain attachments over time of smaller talismans.

One witch's bone mask will not work for a strange witch so bone masks are destroyed and buried on a witch's death.

Another lesser required spell component is skyward clad spells. Usually these are massive renderings of illusion removal or fertility rights, though these have fallen out of fashion through the millennium and most modern covens are content to let the problems sort themselves out rather than engage in such a magic anymore.

Since witches feel more connection with their siblings in other realms, but more loyalty to their own realm, witches will often possess something they use to scry between realms and seek answers. Those that scry more often might know to whom they call and weave that into the process but scrying is often a reaching out and seeing who answers. A common technique is the pouring of a coloured liquid (often tea, though blood or wine work as well) down a cloth slope that is inscribed with a fey border. Some embroider the spell into the cloth for ease of washing for reuse, but the outcome is the same - impossible shapes forming to spell out an omen to be translated.