Automaticly Controled Tank

Adamantine Hull. Cannot be critically hit. 

All Terrain: is not affected by difficult terrain. Aside from 80 and above degree slopes

Fog Light: can see anything in front of it so long as it is not invisible for up to 500 ft.

Radar: cannot be surprised.

Weak Point(150hp): the fuel canister when damaged causes the main gun to stop functioning and causes 150 damage to tank. Also cause a charge of the wand of Fireball to go off with it being the center point. 

Multi-Attack: the tank can make one cannon attack and one machine gun attack, but not at the same target or direction, Or two machine gun attacks.

Main Cannon (recharge 5-6): Ranged Weapon Attack: dexterity saving throw DC 20, range 600/2,400 ft., 20 ft circle target. Hit: 44 (8d10) magical bludgeoning damage and 28 (8d6) fire damage. Consumes one charge of wand of fireball.

Machine Gun Turret: Ranged Weapon Attack: +11 to hit, range 200/400 ft., one target. Hit:35 (10d6) piercing damage.

Keep out: uses one charge of the Horn of Blasting embedded inside the turret affect all within 30 feet of it. 

Magic Missile Defense System (recharge 5-6): when a creature gets within 40 ft of the tank or when it starts its turn within 40 ft, the tank can use its reaction to launch its Magic Missile Defense System dealing 24 (7d4+7) force damage. This attack can only be blocked by cover or with spells including or similar to shield. Consumes one scroll of Magic Missile (level 7 version).