On an interesting note: As a backer of the Kickstarter, I have just received today, via Email, an early release of the Squeaks in the Deep PDF. (This basically gives you rules to play as Rats and Mice within the overall setting that is Pugmire/Monarchies of Mau.) The book is pretty much completed according to the email, but backers are given an early PDF copy for our enjoyment/to help out with errata/spelling errors. We won't get our Physical Books/Backer Rewards until later in the year
Now a clear distinction, that the book/PDF makes, is that Dogs/Cats cast Magic Spells. Mice/Rats, however, do not practice the art of performing magic. Instead, Mice/Rats are Psionics users that derive their Psionics from four overall colleges.
(Update: got the go ahead so without any further ado!!
So as mentioned before,
Squeaks in the Deep makes it clear that Magic and Psionics are two different things. One of the biggest differences is the way in which Mice/Rats cast them. First off, instead of using
Spell Slots they use something that is known as
Power Slots. Here's where it gets interesting. They use the word "Slots' but they treat it more like the 3.0/3.5 Power Points of older edition Psionics. Each Psionic power comes from four different "Colleges" which are more like the Spell Schools of DND and
NOT Bardic Colleges. Unlike the Spell Slots of DND, you can determine the amount of Power Slots you have via the following calculation: Two Power Slots per level, plus an additional number of Power Slots equal to their
Constitution Modifier every level.
So, Mice/Rats are hardy Psionics in regard to casting and a complete shift/difference compared to how Psionics have always seemed to key off of INT/CHA as seen before. Of course, the rules DO mention that when you gain Psionics, you can choose to have it key off either INT, WIS, or CHA in regard to DC calculations, meaning that CON is only good if you want more Power Slots.
The Four Schools of Psionics are as followed: Galvanism, Insight, Humorism, and Parapsychology.
Each power within the four schools is ranked on a Magnitude of 1-5. To cast a Psionic with a Magnitude of 1, you must spend
1 Power Slot. Casting a Psionic with a Magnitude of 5 costs a whopping use of 5 Power Slots. Two casts of Psionics with the highest Magnitude (5) will probably exhaust all your uses, while use of lower Magnitude Psionics can help you spread out your uses.
Again, the book makes it known that there is a clear difference between Magic and Psionics. Even so far as stating how a spell like "Dispel Magic" would have no effect upon Psychic Powers. The
energy between them
operate on a completely different level. In other words, there is very little overlap between the two. So going by that logic, things/monsters, in Pugmire/Monarchies of Mau, that have Spell Resistance would not be able to use it against Psionics. This probably also extends to special situations, such as a certain monster in Monarchies of Mau, that can eat/absorb magic, as it wouldn't be able to do the same thing if Psionics were used against it.
It's pretty much almost like a simplified version of the Spell Points system in the DMG.