Vicious Plating. The scorpion takes 1 less damage from all sources.

Multiattack. The scorpion makes three claw attacks or two sting attacks.

Claw. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 16 (3d6 + 6) bludgeoning damage, and the target is grappled (escape DC 18). The scorpion has two claws, each of which can grapple only one target.

Sting. Melee Weapon Attack: +10 to hit, reach 5 ft., one creature. Hit: 17 (2d10 + 6) piercing damage, and the target must make a DC 18 Constitution saving throw, taking 27 (6d8) poison damage on a failed save, or half as much damage on a successful one.