|Size/Type:||Large Magical Beast||Large Magical Beast|
|Hit Dice:||40d10+680 (900 hp)||45d10+855 (1,102 hp)|
|Initiative:||+23 (+15 Dex, +8 Superior Initiative)||+25 (+17 Dex, +8 Superior Initiative)|
|Speed:||90 ft.||120 ft.|
|Armor Class:||44 (+15 Dex, -1 size, +20 natural)||50 (+17 Dex, -1 size, +24 natural)|
|Attack:||Claw +56 melee (2d6+16/19-20 (+1d6 on critical hit))||Claw +63 melee (3d6+18/19-20 (+1d6 on critical hit))|
|Full Attack:||4 claws +56 melee (2d6+16/19-20 (+1d6 on critical hit)), bite +54 melee (4d6+8)||4 claws +63 melee, 3 bites +61 melee|
|Space/Reach:||10 ft./5 ft.||10 ft./5 ft.|
|Special Attacks:||Pounce, stunning roar||Pounce, stunning roar|
|Special Qualities:||Blindsight 300 ft., DR 10/epic, darkvision 60 ft., fast healing 20, low-light vision, SR 39, scent; acid, cold, electricity, fire, and sonic resistance 10||Blindsight 350 ft., DR 10/epic, darkvision 60 ft., fast healing 25, low-light vision, SR 42, scent; acid, cold, electricity, fire, and sonic resistance 15|
|Saves:||Fort +39, Ref +37, Will +27||Fort +45, Ref +43, Will +33|
|Abilities:||Str 42, Dex 40, Con 44, Int 21, Wis 38, Cha 28||Str 47, Dex 45, Con 49, Int 26, Wis 43, Cha 33|
|Skills:||Climb +59, Hide +58, Jump +83, Listen +57, Move Silently +58, Spot +57, Survival +57||Balance +65, Climb +66, Hide +65, Intimidate +59, Jump +102, Listen +64, Move Silently +65, Search +56, Spot +64, Survival +64|
|Feats:||Cleave, Great Cleave, Improved Critical (claw), Improved Initiative, Multiattack, Power Attack, Weapon Focus (bite), Weapon Focus (claw)||Cleave, Great Cleave, Improved Critical (claw), Improved Initiative, Multiattack, Power Attack, Weapon Focus (bite), Weapon Focus (claw)|
|Epic Feats:||Blinding Speed (×4), Overwhelming Critical (claw), Superior Initiative||Blinding Speed (×6), Overwhelming Critical (claw), Superior Initiative|
|Organization:||Solitary, pair, or pack (4-9 sirrushes and 1-2 three-headed sirrushes)||Solitary, pair, or pack (1-2 three-headed sirrushes and 4-9 sirrushes).|
|Alignment:||Usually chaotic neutral||Usually chaotic neutral|
|Advancement:||41-50 HD (Large), 51-60 HD (Huge), 61+ HD (Gargantuan)||46-55 HD (Large); 56-65 HD (Huge); 66+ HD (Gargantuan)|
Sirrushes speak Sylvan and Draconic.
Stunning Roar (Ex)
Every 1d4 rounds, a sirrush can loose a sonic attack of such volume that it stuns all creatures in a 60-foot spread for 1d4 rounds if they fail a Fortitude saving throw (DC 47, or DC 51 for a three-headed sirrush). The DC is Constitution-based.
Headloss Resistance (Ex)
A sirrush’s thick bony plate protects its neck like a shield and provides resistance from effects that could normally behead it, such as a vorpal weapon. When a sirrush or three-headed sirrush would otherwise lose its head, it instead makes a Fortitude saving throw (DC 10 + ½ HD of attacker + attacker’s Str modifier). On a failed save, the sirrush’s head leaves its shoulders normally, but on a successful save, the sirrush is unaffected by the beheading. A sirrush dies when beheaded; a three-headed sirrush goes on fighting until all its heads are lost (the only penalty it incurs is one or two fewer bite attacks when it makes a full attack).