Huge Beast
Armor Class 12
Hit Points 52 (7d12+7)
Speed swim +30, walk +30, climb +30
Challenge 2
Skills perception +2
Senses blindsight 10 ft., passive Perception 12
Bite. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 13 (2d8+4) piercing damage.
Constrict. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 11 (2d6+4) bludgeoning damage and the target is grappled (escape DC 16). Until this grapple ends the target is restrained and the snake can't constrict a different target.
Source: Level Up Advanced 5e Monstrous Menagerie · OGL/Open