Creature: Skylion (CR 9)

Large Magical Beast (outsider)
Hit Dice: 15d10+30 (112 hp)
Initiative: +3
Speed: 40 ft. (8 squares), Fly 80 ft. (average)
Armor Class: 15 (-1 size, +3 Dex, +3 natural), touch 12, flat-footed 12
Base Attack/Grapple: +15/+20
Attack: Claw + 20 melee (1d4+5)
Full Attack: 2 claws +18 melee (1d4+5) and bite +20 melee (1d8+2)
Space/Reach: 10 ft./5 ft.
Special Attacks: Pounce, improved grab, rake 1d4+2
Special Qualities: Low-light vision, scent
Saves: Fort +11, Ref +12, Will +6
Abilities: Str 21, Dex 17, Con 15, Int 5, Wis 13, Cha 10
Skills: Balance +7, Hide +3*, Listen +5, Move Silently +11, Spot +5
Feats: Alertness, Run, Improved Grab, Power Attack, Iron Will, Multiattack, Flyby Attack
Environment: Outer Planes (elemental air?, concordiant domains?)
Organization: Solitary, pair, or pride (6-10)
Challenge Rating: 9
Treasure: Standard
Alignment: usually neutral, some lawful tendencies
Advancement: 16-20 HD (Huge)
Level Adjustment: -

This creature, most often seen serving as a noble and beautiful steed to powerful conjurers, originates from snow caped, wind swept peaks on the outer planes. They are strongly empathic and magical creatures, making them excellent steeds, espically if cared for properly. Their form is that of a large white lion, with colored mane and wings (typically sky blue), and are 6 to 9 feet long and weighs 330 to 550 pounds. Females are slightly smaller and lack a mane but use the same statistics.

Combat

Pounce (Ex): If a skylion charges a foe, it can make a full attack, including two rake attacks.

Improved Grab (Ex): To use this ability, a skylion must hit with its bite attack. It can then attempt to start a grapple as a free action without provoking an attack of opportunity. If it wins the grapple check, it establishes a hold and can rake.

Rake (Ex): Attack bonus +18 melee, damage 1d4+2.
Immunities (Ex): Skylions have cold and electricity resistance 10.

Skills: Skylions have a +4 racial bonus on Balance, Hide, and Move Silently checks. *In the sky (when viewed from below) or snow, the Hide bonus improves to +12.
In addition, because of their empathic nature, riders can recieve a +5 on their ride checks if the Sky Lion wishes to confer it (usually dependent on their treatment by their rider).