Multiattack

The arx makes two Claw attacks and one Spear attack.

Claw

Melee Weapon Attack: +9 to hit, reach 5 ft., one target. Hit: 18 (3d8 + 5) slashing damage.

Spear

Melee or Ranged Weapon Attack: +9 to hit, reach 5 ft. or range 20/60 ft., one target. Hit: 12 (2d6 + 5) piercing damage, or 14 (2d8 + 5) piercing damage if used with two hands to make a melee attack.

Wall Smash

If the arx has its wall set up (see Emplace Wall), it can briefly close the panels of the wall in on each other. Each creature other than the arx between the panels in a 10-foot cone from the corner where the panels meet must make a DC 16 Dexterity saving throw, taking 28 (8d6) bludgeoning damage on a failed save, or half as much damage on a successful one.