Thessalhydra

AC 33, touch 21, flat-footed 18 (+15 Dex, +12 natural, –4 size)

hp 310 (20d8+220); fast healing 15

Fort +17, Ref +21, Will +19

Immune acid

Speed 40 ft., swim 20 ft.

Melee bite +27 (3d6+10/19–20 plus 2d6 acid), 8 snake bites +25 (1d8+5/19–20 plus 1d6 acid), pincer +24 (2d8+5 plus grab)

Ranged 8 acid spits +26 touch (2d6 acid)

Space 20 ft., ; Reach 20 ft. (30 ft. with snake bites, 40 ft. with pincer)

Special Attacks breath weapon (160-ft. line, 20d6 acid damage, Reflex DC 31 half, usable every 1d4 rounds), constrict (2d6+10), pounce

CMB +29 CMD 54 (58 vs. trip)

Str 31,, Dex 40,, Con 32,, Int 2,, Wis 24,, Cha 9

Base Atk +15

Feats Bleeding Critical , Combat Reflexes , Critical Focus, Improved Critical (bite , snake bites), Multiattack , Skill Focus (Perception) , Weapon Finesse , Weapon Focus (bite) , Weapon Focus (snake bites)

Skills Perception +31, Swim +26

Acid Spit (Su) As a standard action, a thessalhydra can spit acid from its eight snake mouths, making eight ranged touch attacks at any number of targets within a range of 120 feet. On a hit, an acid spit deals 2d6 points of acid damage. A creature hit by multiple acid spits from a single thessalhydra in 1 round takes the damage as if from one source for the purposes of applying acid resistance. For example, a creature hit by eight acid spits would take 16d6 points of acid damage, not 2d6 points of acid damage eight times. A creature critically hit by acid spit must succeed at a DC 31 Reflex save to avoid being blinded for 1 round by the acid. The save DC is Constitution-based.

Snake Bite (Ex) A thessalhydra’s serpent heads strike as secondary attacks that deal piercing and slashing damage plus an additional 1d6 points of acid damage.