Clockwork Destructor Mk3

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

Siege Monster. The Destructor deals double damage to objects and structures.

Self Destruct. When the Clockwork Destructor Mk3 dies, it explodes, and each creature within 30 feet of it must make a DC 14 Dexterity saving throw, taking 17 (5d6) fire damage on a failed save, or half as much damage on a successful one. The explosion ignites flammable objects in that area that aren’t being worn or carried.

Critical Malfunction. The Clockwork Destructor Mk3 starts to experience malfunctions and starts to burn if it reaches half HP. At the start of each of the Destructors turns, each creature within 5 feet of it takes 3 (1d6) fire damage, and flammable objects in the aura that aren’t being worn or carried ignite. A creature that touches the Destructor or hits it with a melee attack while within 5 feet of it takes 3 (1d6) fire damage.

Multiattack. The Destructor makes two Chainsaw attacks or two scrap spewer attacks

Chainsaw. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 15 (2d10 + 4) slashing damage.

Scrap Spewer. Ranged Weapon Attack: +4 to hit, range 50/200 ft., one target. Hit: 11 (2d10 + 1) piercing damage.

Missguided Missile Barrage. range 100 ft., The Destructor fires 4 missiles at random targets around him. Each missiles deals (5d6) fire damage. To determine who the missiles target, let every combatant roll a d20(including the Clockwork Destructor Mk3) and hit every combatant, beginning with the lowest score, with 1 missile.  If the Clockwork Destructor Mk3 rolls a 1, all 4 missiles hit it.