Aerial Servant (CR 12)

Large Elemental (Air)
Alignment: Usually neutral
Initiative: +8 (+4 Dex, +4 Improved Initiative); Senses: Listen +10 and Spot +10

AC: 17 (-1 size, +4 Dex, +4 natural), touch 13, flat-footed 13
Hit Dice: 16d8+32 (104 hp); DR: 5/magic
Fort +7, Ref +14, Will +6
Speed: 30 ft., fly 60 ft. (perfect)
Space: 5 ft./10 ft.
Base Attack +12; Grapple +12
Attack: Slam +18 melee
Full Attack: Slam +18 melee
Damage: Slam 8d4+6
Special Attacks/Actions: Improved grab
Abilities: Str 23, Dex 19, Con 14, Int 4, Wis 12, Cha 11
Special Qualities: Elemental, natural invisibility
Feats: Combat Reflexes; Dodge; Improved Initiative; Weapon Focus (slam)
Skills: Listen +10, Move Silently +15, Spot +10, and Survival +10
Advancement: 17-24 HD (Large), 25-32 HD (Huge)
Climate/Terrain: Any land and underground
Organization: Solitary
Treasure/Possessions: None

Source: Converted

Natural Invisibility (Su): This ability is constant, allowing the aerial servant to remain invisible even when attacking. This ability is inherent and not subject to the invisibility purge spell.

Elemental: Immune to poison, sleep, paralysis, and stunning. Not subject to critical hits.

Air Subtype

This subtype usually is used for elementals and outsiders with a connection to the Elemental Plane Air. Air creatures always have fly speeds and usually have perfect maneuverability (see the section on Movement).