Hm, looking over the Base 4 for Muto Animal, and the Base spell guidelines for 5 and 10, I am wondering how much a Base 4 spell can changer an animal's limb. Could it give a wolf a duck's foot? Allow you to give an animal a different animal's head?
Target: Group would that change change all the animal's limbs, one limb from all animals in a group, or all limbs of all animals in the group (providing the the group is large enough)
Yes maybe, i suppose that you can decide it when you are designing the spell. Or add and +1 to add an extra efffect.
To be exact an example:
Hoove of the predator:
Level 15
R: Voice, D: Diameter, T: part
You can transform a claw of a predatory animal in hooves. That make very differents thirs "claw" attacks. It's best with Fast casting.
Base 3, +2 Voice, +1 Diameter, +1 part.
Flawed claws:
level 20
R: Voice, D: Diameter, T: part
You can transform the both claws of a beast in less dangerous hooves.
Base 3, +2 Voice, +1 Diameter, +1 part, +1 to affect another Limb two.
Paw to Fin
MuAn 10
R: Voice, D: Momentary, T: Part
The foreleg of a single beast of up to Size +1 is changed into a fin for a moment. This is generally sufficient for it to stumble, throw a rider, or otherwise ruin its attack for the turn. A stress roll of Dexteriy + Athletics vs. a difficulty of 12 must be made to stay upright. A botch can result in a twisted or broken fin, which becomes a broken leg when the spell ends.
[Base 3, +2 Voice, +1 Part]
Although, I think that I would have made the Dex roll to remain standing against an Ease Factor of 9. And perhaps hardwire in a similar Dex + Ride roll for an rider to remain mounted.
Look at Pe An spell Blunt the Viper's Fangs lvl 15 Voice/Mom/Ind - it blunts the teeth, claws, whatever - all of them on the entire animal. With T:Ind! By this I'd feel cheated if having to use Muto with T:Part and added magnitudes for all 4 sets of claws on the lion.
Familiar example powers on p105 lists Razor Sharp Steel Claws with little detail. It's not clear if this is a Cr Te or Mu An or even Mu An (Te), nor what the Target is.