Clockwork Giant Constrictor Snake

Magic Resistance. The clockwork has advantage on saving throws against spells and other magical effects.

Unusual Nature. The clockwork doesn’t require air, food, drink, or sleep.

Electrical Discharge: When reduced to 0 HP, the clockwork creature issues a static discharge, causing all creatures within a ten-foot radius to make a DC 15 Constitution saving throw, taking 7 (2d6) lightning damage, or half on a successful save.

Bite. Melee Weapon Attack: +6 to hit, reach 10 ft., one creature. Hit: 11 (2d6 + 4) piercing damage.

Constrict. Melee Weapon Attack: +6 to hit, reach 5 ft., one creature. Hit: 13 (2d8 + 4) bludgeoning damage, and the target is grappled (escape DC 16). Until this grapple ends, the creature is restrained, and the snake can't constrict another target.