The Dye Trade

[Berengar]

@Ezechiel357

Requiring prior knowledge to invent such spell is in contradiction with how Creo spell are designed. They never require a level in Craft/Profession/Skill - for example Profession: Architect for CtMT. However, as with Craft magic, you might require a Finesse roll to achieve a certain hue.

The EF of the Finesse roll required is outlined in HoH:S p.60f (and was before in Covenants p.49 box Rego Craft Magic).

ArM5 p.77 requires in its introduction of Creo Creo (CR) "I create", that "a magus can only create something he knows about". "A magus need not be able to create an artificial item by mundane means in order to create it by magic; he only needs to be somewhat familiar with it." What that means for really complex things at the edge of medieval understanding is shown in A&A p.70 box Replicating Formulae with Hermetic Magic.

This discussion appears every now and then on this forum: see Mass-Produced Reagents . Using magic only to create the animals and/or plants the dye is made of avoids it.

Cheers