Large monstrosity (Shapechanger, Yuan-ti), neutral evilArmor Class 15 (natural armor)
Hit Points 127 (15d10 + 45)
Speed 40 ft.STR
19 (+4)DEX
16 (+3)CON
17 (+3)INT
17 (+3)WIS
15 (+2)CHA
18 (+4)Skills Perception +5, Stealth +6
Damage Immunities poison
Condition Immunities poisoned
Senses darkvision 60 ft., passive Perception 15
Languages Abyssal, Common, Draconic
Challenge 7 (2900 XP)