Mindstealer Master (CR 20)

Large Aberration
Alignment: Usually neutral
Initiative: +3 (Dex); Senses: darkvision 60 ft.
Languages: Any absorbed by drones

AC: 20 (+3 Dex, -1 size, +8 natural), touch 12, flat-footed 17
Hit Dice: 20d8+60 (150 hp)
Fort +9, Ref +9, Will +15
Speed: 40 ft.
Space: 10 ft./10 ft.
Base Attack +15; Grapple +23
Attack: Slam +18 melee (2d8+4) or energy drain +17 ranged touch
Full Attack: 2 slams +18 melee (2d8+4) or energy drain +17 ranged touch
Damage: -
Special Attacks/Actions: Drone drain, energy drain
Abilities: Str 18, Dex 16, Con 16, Int 25, Wis 16, Cha 20
Special Qualities: Create drones
Feats: Alertness; Blind-fight; Combat Reflexes; Dodge; Mobility; Point Blank Shot; Shot on the Run
Skills: Appraise +17, Balance +13, Bluff +23, Climb +14, Concentration +13, Craft (any) +17, Craft (any) +17, Diplomacy +21, Disguise +22, Escape Artist +13, Forgery +17, Gather Information +15, Heal +13, Hide +16, Intimidate +17, Knowledge (arcana) +32, Knowledge (architecture and engineering) +32, Knowledge (dungeoneering) +32, Knowledge (geography) +32, Knowledge (history) +32, Knowledge (local) +32, Knowledge (nature) +32, Knowledge (nobility and royalty) +32, Knowledge (religion) +32, and Knowledge (th
Advancement: 21-40 HD (Large)
Climate/Terrain: Any
Organization: Solitary
Treasure/Possessions: Standard

Source: Web

Create Drones (Ex): A mindstealer master can create mindstealer drones. This process takes 24 hours as the master creature separates a part of itself to make the material for the drone creature. It can have up to 20 drones at a time (1 per Hit Die).

Drone Drain (Su): A mindstealer master can absorb a drone into its body and then absorb all the drone's stolen memories (but not absorbed abilities). This process takes 1 minute and returns the drone to its base state. Masters do not gain class levels or class abilities from this drain; they gain only memories.

Energy Drain (Su): A mindstealer master inflicts two negative levels on a target within 30 ft. on a successful ranged touch attack. The master gains 5 temporary hit points per negative level inflicted. Unlike the drones, the master creature does not gain any other benefit from inflicting negative levels. It can use its energy drain ability once per round. The save DC to remove a negative level is 25. The save DC is Constitution-based.

Skills: Because they absorb the knowledge of other creatures, mindstealer masters are considered trained in all skills. A mindstealer master has a +10 bonus on all skill checks, thanks to all the memories it has absorbed.

Mindstealer masters are formidable opponents but avoid combat when possible.