This part of the guide covers Book II, which requires to defeat Lucky Yi, Greyhoof and Skitterer Xi'a. As you will see, these three Elites are all very easy to kill.
BEASTS OF FABLE BOOK II
LUCKY YI

From my experience, you can pretty much ignore her heal since she often casts it at the very beginning of the fight (essentially wasting it) or even forget to heal at all! Moreover, as she spends turns to buff or heal herself, very unlikely she will one or bi-shots you. So, despite hitting pretty hard, chances are that Lucky Yi will die before you even engage your third pet.
Here, Beasts are your obvious choice: go with hard-hitting ones, such as
snakes (Elder Python with Bite, Huge Fang and Slither), cats (Prowl and Pounce), bears or
raptors. But really, any Beast will just work more than fine.
There is not a special strategy to kill Lucky Yi, other than brute-force
her to death.
GREYHOOF
Greyhoof is a kodo located in the Valley of the Four Winds; he has 2079 health, 600 power and 306 speed. His abilities are Trample, Hoof and Roar.
For this fight you can use the same line-up and tactic used against Kafi (see here). Very easy!
SKITTERER XI’A
Skitterer Xi’A is an aquatic pet located at the Krasarang Falls, in Krasarang Wilds. He has 1801 health, 563 power and 375 speed. His abilities are Skitter, Flurry and Water Jet. What we call a hard-hitter =)

Wildhammer Gryphon Hatchling, Gryphon Hatchling and Wind Rider Cub all have the perfect set-up for this fight: Squawk, Slicing Wind and Lift-Off. Of course, you do not need to possess all three: one to apply the damage reduction is more than enough.
Basically, start the fight by applying Squawk or Shriek, then hit Lift-Off after which spam Slicing Wind. Die, switch pet, rinse and repeat, win.
/Mizi