Snake, Constrictor
large Beast
Armor Class 12
Hit Points 15
Speed swim +30, walk +30
Challenge 1/4
Saving Throws cha -4, con +1, dex +2, int -5, str +2, wis +0
Senses keensense 10 ft.
Languages -
Actions
Bite. _Melee Weapon Attack:_ +4 to hit, reach 5 ft., one creature. _Hit:_ 5 (1d6+2) piercing damage.
Constrict. _Melee Weapon Attack:_ +4 to hit, reach 5 ft., one creature. _Hit:_ 6 (1d8+2) bludgeoning damage, and the target is grappled (escape DC 12), if it is a Large or smaller creature. Until this grapple ends, the creature is restrained, and the snake can't Constrict another target.
Bonus Actions
Crush. One creature grappled by the snake must succeed on a DC 12 STR or take 4 (1d8) bludgeoning damage and begin suffocating. The creature continues suffocating until the grapple ends.
Source: Black Flag SRD · OGL/Open