Spell Reagents and Botanical Inks

At its simplest, a reagent is an all encompassing term for a special spell component that can be used to modify spells. Some reagents provide a simple boost to a spell's intensity, such as by increasing the intent or effect. Others change the spell in different ways, providing it with new uses and increased utility.  There is no real limit to what a reagent can be, or how it can change a spell, but it should work to enhance and work with the spell rather than working against the purpose. For instance, using a solely protective reagent when casting a baneful spell against someone else!