@King Cosmos good luck, and try not to die
If you wanted it to be in a similar vein of 'increasing the chances of success' it could be something as simple of a skill that lets her know how well and how efficiently a material could work with another? At a low level it'd only be a general idea of perhaps how 'good' or 'bad' a material would react with another. At higher levels it could let her know how potent an ingredient is, how well an ingredient would react with another, and if that particular ingredient had any special or odd properties.
Basically just a type of analysis skill for alchemy. Effectively, 'increasing chances of success' would be written in practice as 'I can tell how well this reacts with something, but now what the effects are until the skill gets stronger/I discover it myself through trial and error.' With the 'chance increasing' bit basically more or less being intuition, a bit of educated guesswork, and previous experiences. sort of. Not sure if I'm explaining it right, but that's the best I got at the moment. The skill itself would get stronger by discovering new items/ingredients and using said item and ingredients in alchemy. A helpful tool, but one that only grows as the user explores their alchemical abilities.


@Guy0fV4lor
Calm down there, Zaheer. XD