[@Guy0fV4lor]
You will grow larger, but it isn't a 1:1 ratio! Slimes poop too!

You can eat virtually anything of nutritional value, given enough time and energy!

You can only split into multiple slimes after at least tripling your body mass, which likely will not occur unless you really want it to because A) it would make you a mother and B) you'll probably evolve first!

[@King Cosmos]
Both of your assumptions about Ardur are correct, actually! Grinding a skill IS effective, but only to a certain level. I like to compare it to martial arts--the simple quote goes that Bruce Lee fears the man who practices 1 kick 10,000 times. It's true that by repeating a technique the student gets better at it--but to be a true master of a single technique, it also makes sense that after your first 10k, you probably want to do more repetitions that aren't so...monotonous. You can stand there and do a roundhouse kick from your rigid stance, and you'll get good at it. But then if you practice doing a roundhouse kick on a moving target; if you practice doing it after countering the opponent; if you practice doing it at different heights and angles; and so on and so forth, then you continue to get better.

In other words, there will be diminishing returns, and spamming stuff for level ups won't really work until you spam them in a more creative way--like your idea of trying to use multi-targeted versions of the same spell.

[quote=@Rune_Alchemist]
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.
[/quote]
 Brilliant idea, it does this now! Feel free to change the description in your Character Sheet to reflect that!