Sea Serpent Venom
Poison (injury)
This toxin is concocted by deep ones from the venom of giant sea snakes. A creature subjected to this poison takes 3d6 poison damage or half damage with a successful DC 12 Constitution saving throw. Once the saving throw is failed, the creature makes this saving throw with disadvantage until they complete a long rest. If a creature takes 15 or more poison damage from a single dose of sea serpent venom, the creature is also paralyzed until the end of its next turn.