Stone Serpent

Large elemental, unaligned

Armor Class 18 (natural armor)

18 (natural armor) Hit Points 144 (12d10 + 72)

144 (12d10 + 72) Speed 40ft., 40 ft. burrow

STR DEX CON INT WIS CHA 21 (+5) 8 (-1) 22 (+6) 5 (-3) 14 (+2) 6 (-3)

Condition Immunities petrified, poisoned

petrified, poisoned Damage Immunities poison

poison Senses passive Perception 12

passive Perception 12 Languages Terran

Terran Challenge 7 (2900 XP)

Fast Burrow. If the Stone Serpent uses its action to dash using its burrow speed, it can use a bonus action make one bite attack.

Actions

Multiattack. The stone serpent can make one bite attack and one tail attack when it takes the attack action.

Bite. Melee Weapon Attack: +8 to hit, reach 10ft., one target. Hit 15 (2d8 + 5) piercing damage.

Tail. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit 19 (2d12+5) bludgeoning damage. The target must make a DC 15 Constitution Saving Throw or be knocked prone.