From now on ill put the link at the bottum so its not right up front. Hope you like this one. This is one of the toughest monsters I have made so far (thats not template based 
). Hope you like it.
Karrnathi Battlemaster
Medium Undead
Hit Dice: 20d12+20 plus 340 (438 hp)
Initiative: +24 (+3 Dex, +4 improved initiative, +17 luck)
Speed: 30 ft.
AC: 45 (+3 Dex, +15 natural, +17 deflection), touch 30, flat-footed 35
Base Attack/Grapple: +10/+22
Attack: Slam +40 melee (1d6+29/15-20/x3 plus stun plus wisdom drain)
Full Attack: 2 Slams +40 melee (1d6+29/15-20/x3 plus stun plus wisdom drain)
Space/Reach: 5 ft./5 ft.
Special Attacks: Augmented critical, Flesh-rotting gaze, Stun, Unholy Power
Special Qualities: Damage reduction 20/Adamantine and bludgeoning, darkvision 60 ft., resistance to cold 20, spell resistance 30, spiky defense, turn resistance +4, undead traits, unholy toughness, unholy grace, unholy speed
Saves: Fort +23, Ref +26, Will +30
Abilities: Str 34, Dex 17, Con -, Int 11, Wis 15, Cha 44
Skills: Climb +36, Intimidate +41, Jump +36, Spot +26
Feats: Ability Focus (Flesh-Rotting Gaze) (B), Ability Focus (Stun) (B), Cleave, Great Cleave, Improved Critical (Slam), Improved Initiative, Improved Natural Attack (Slam), Improved Toughness *, Power Attack (B), Weapon Focus (Slam)
Environment: Any
Organization: Any
Challenge Rating: 19
Treasure: Standard
Alignment: Always Lawful Evil
Advancement: By character class
Level Adjustment: -
A zombie covered in a thick layer of spiked stone moves toward you, its fists seem huge and ready to smash anything. A large crystal that’s placed in the center of its head peace seams to give off a blood red light that seams to rot anything it touches. The eyes of the thing seem to glow with a bright gold light and convey a feeling of death to you.
Created from slain karrnathi generals that have been incased in a thin spiked stone armor. Then infused with an unbelievable amount of negative energy, then animated using an unholy ritual. These undead have also been armed with a focusing kyber shard. This shard is what gives them their flesh-rotting gaze attack.
Not many of these undead have been made at most, about two dozen are known to have been made. There power on the battle field is noticeable from afar since most things they see die before they even get close to attack. These karrnathi undead are commonly seen leading troops into battle.
The knowledge on how to make these undead has been lost and is thought to be some place in the mornlands from one of the many battles that was fought there doing the war. The many failed tries to make more since the end of the war. Has instead ending up in creating a construct that has many of the same abilities but it lacks the many essential abilities that make the karrnathi battlemaster what it is.
Karrnathi battlemaster’s speak common.
Combat
Karrnathi battlemaster’s are keen strategist on the battlefield commanding their troops to flank, gang up on, and other such tactics.
Augmented Critical (Ex): The karrnathi battlemaster’s slam attack threatens a critical hit on a natural attack roll of 18-20, dealing triple damage on a successful critical hit. Thanks to the battlemaster’s improved critical feat, the battlemasters slam attack threatens for a critical on a natural attack roll of 15-20.
Flesh-Rotting Gaze (Su): Deals 25d6 damage, 120 feet, Will DC 39 for half damage. The save DC is Charisma-based this includes the bonus from ability focus feat.
Spiky Defense (Ex): A karrnathi battlemaster’s stony body is covered with small sharp spikes. A creature that hits a karrnathi battlemaster with a natural weapon or an unarmed attack takes 3d6 points of piercing damage.
Stun (Su): Whenever a karrnathi battlemaster hits with a slam attack, the opponent must succeed on a DC 39 Fortitude save or be stunned for 1d8 rounds. The save DC is Charisma-based this bonus includes the bonus from the ability focus feat.
Unholy Power (Su): A karnnathi battlemaster adds its Charisma modifier as a luck bonus to its melee attack and damage roles.
Unholy Toughness (Ex): A karrnathi battlemaster gains a bonus to its hit points equal to its Charisma modifier X its Hit Dice.
Unholy Grace (Su): A karrnathi battlemaster adds its Charisma modifier as a bonus on all its saving throws, and as a deflection bonus to its Armor Class.
Unholy Speed (Su): A karrnathi battlemaster adds its Charisma bonus as a luck bonus to its Initiative modifier.
Wisdom Drain (Su): A karrnathi battlemaster drains 1d6 points of Wisdom each time it hits with its slam attack. (Unlike other kinds of ability drain attacks, a karrnathi battlemaster does not heal any damage with its Wisdom drain.)
*See Libris Mortis for this feat.
Note: THis one I might be changing some.