Rakdos Augermage

Baron Tritas, Rakdos Augermage

CR 19 XP: 204,800
Male human summoner 20
CE Medium humanoid (human)
Init +3; Senses Perception +11
AC 38, touch 29, flat-footed 34 (+9 armor, +5 deflection, +10 dodge, +3 Dex)
HP 170 (20d8+80)
Fort +11, Ref +12, Will +15
Speed 30 ft.
Melee +1 heavy mace +15/+10/+5 (1d8+1)
Ranged +1 light crossbow +19 (1d8+1, Crit 19−20/x2, Range 80 ft.)
Special Attacks merge forms 20 rounds/day, twin eidolon 20 minutes/day
Spell-Like Abilities (CL 20th; concentration +26) 9/day—gate or summon monster IX
Spells Known (CL 20th) 
  6th (6/day)-Incendiary Cloud, Maze, Summon Monster VIII, Teleportation Circle
  5th (6/day)-Greater Dispel Magic, Greater Rejuvenate Eidolon APG, Greater Teleport, Hungry Pit APG, Mass Invisibility
  4th (6/day)-Baleful Polymorph, Greater Evolution Surge APG, Hold Monster, Mass Bulls Strength, Summon Monster V, Teleport
  3rd (6/day)-Black Tentacles, Charm Monster, Dispel Magic, Evolution Surge APG, Greater Invisibility, Seek Thoughts APG, Stoneskin
  2nd (7/day)-Alter Self, Barkskin, Detect Thoughts, Haste, Lesser Evolution Surge APG, Invisibility
  1st (7/day)-Ant Haul, Enlarge Person, Expeditious Retreat, Lesser Rejuvenate Eidolon APG, Magic Mouth, Shield
  0th-Acid Splash, Detect Magic, Guidance, Light, Mage Hand, Read Magic
Before Combat Baron Tritas casts silent invisibility and summons his eidolon, then uses his twin eidolon ability. 
During Combat Using his twin eidolon ability, Baron Tritas wrecks havoc with frightful presence (DC 26) to terrify foes before relishing the power of his physical form, spreading enemies out and isolating opponents to take them out singularly.
Morale Tritas is a petty sadist and not interested in dying; he f lees when reduced to 40 hit points or less. 
Str 8, Dex 16, Con 15, Int 12, Wis 10, Cha 22
Base Atk +15; CMB +14; CMD 42
Feats Augment Summoning, Dodge, Greater Spell Focus (Conjuration), Run, Silent Spell, Skeleton Summoner, Spell Focus (Conjuration, Necromancer), Still Spell, Superior Summoning, Toughness
Skills Bluff +26, Fly +7, Knowledge (arcana) +8, Knowledge (local) +5, Knowledge (planes) +7, Linguistics +6, Perception +11, Sense Motive +12, Spellcraft +18, Stealth +14, Use Magic Device +10
Languages Common, Draconic, Goblin, Orc, Undercommon
SQ aspect, bond senses, eidolon (Baron Eidolon page 371), greater aspect, greater shield ally, life link, maker’s call, shield ally, transposition
Gear potions of cure serious wounds (2), potion of invisibility, potion of nondetection
Other Gear +1 heavy mace, +1 light crossbow (30 bolts), +5 chain shirt, cloak of resistance +3, ring of freedom of movement, ring of mind shielding and protection +5, headband of alluring charisma +4, 442 gp; Attuned Gear +3 keen shocking burst light crossbow, +5 improved shadow chain shirt, amulet of proof against detection and location, belt of mighty constitution +6, dust of disappearance, gem of seeing, mantle of faith [hp 233; Fort +14; DR 5/evil; constant nondetection, true seeing 30 mins/day; Stealth +24; Ranged +3 keen shocking burst light crossbow +21 (1d8+3 plus 1d6 electric, Crit 17−20 plus 1d10 electric, Range 80 ft.]