Tertian (Hierarch Modron) (CR 16)

Large Outsider
Alignment: Always lawful neutral
Initiative: +7 (+3 Dex, +4 Improved Initiative); Senses: darkvision 60 ft., Listen +24, and Spot +25
Languages: Telepathy 405 miles

AC: 31 (-1 size, +3 Dex, +19 natural), touch 12, flat-footed 28
Hit Dice: 17d8+85 (161 hp); DR: 40/iron
Fort +15, Ref +13, Will +16
Speed: 30 ft.
Space: 5 ft./10 ft.
Base Attack +17; Grapple +17
Attack: 2 slams +22 melee, tail slap +20 melee
Full Attack: 2 slams +22 melee, tail slap +20 melee
Damage: Slam 2d8+6, tail slap 2d8+3
Special Attacks/Actions: Spell-like abilities, spells, stun
Abilities: Str 22, Dex 17, Con 20, Int 20, Wis 22, Cha 22
Special Qualities: psionics immunity, modron qualities, resistances, SR 31
Feats: Alertness; Blind-fight; Improved Initiative; Multiattack; Spell Penetration
Skills: Concentration +23, Diplomacy +23, Gather Information +25, Hide +13, Knowledge (any three) +15, Knowledge (planes) +17, Listen +24, Search +21, Sense Motive +25, Spellcraft +21, Spot +25, and Survival +16
Advancement: 18-51 HD (Large)
Climate/Terrain: Any land
Organization: Solitary
Treasure/Possessions: None

Source: Converted

Spell-like Abilities: At will -- clairaudience/clairvoyance, command, dimension door, teleport without error (self plus 50 pounds of objects only), and wall of force. These abilities are as the spells cast by a 20th-level sorcerer (save DC 16 + spell level).

Spells: A tertian cast divine spells as a 20th-level cleric (save DC 16 + spell level). They can also cast arcane spells as 20th-level sorcerers (DC 16 + spell level). Tertians have access to the domains of Law, Protection, and War.

Stun (Ex): Tail slap, Fortitude save (DC 24) or stunned 3d4 rounds.

Psionics Immunity (Ex): Immune to all psionic attacks.

Resistances (Ex): Acid, cold, and fire resistance 10.

Modron Qualities (Ex): Immune to mind-influencing effects; not subject to subdual damage, ability damage, ability drain, or energy drain; not subject to critical hits.

Telepathy (Su): Tertians can communicate telepathically with any creature within 405 miles that has a language.