Big Metal Bug (Car)

Fire Absorption. Whenever the Big Metal Bug is subjected to fire damage, it takes no damage.

Lightning Absorption. Whenever the Big Metal Bug is subjected to lightning damage, it takes no damage.

Immutable Form. The Big Metal Bug is immune to any spell or effect that would alter its form.

Magic Resistance. The Big Metal Bug has advantage on saving throws against spells and other magical effects.

Multiattack. The Big Metal Bug makes two melee attacks.

Slam. Melee Weapon Attack: +13 to hit, reach 5 ft., one target. Hit: 20 (3d8 + 7) bludgeoning damage.

Poison Breath (Recharge 6). The Big Metal Bug exhales poisonous gas in a 15-foot cone. Each creature in that area must make a DC 19 Constitution saving throw, taking 45 (10d8) poison damage on a failed save, or half as much damage on a successful one.

Honk.
3rd-level evocation
Casting time: 1 action
Range: 90 ft.
Components: V, S, M (a horn)
Duration: Instantaneous

You emit a concussive sound wave, a cone of noise emanating from 20ft up in the air downwards towards a point within range, damaging creatures within the area. Each affected creature must make a Constitution saving throw. On a failed save, a creature takes 1d4 thunder damage and is stunned for 1 minute. On a successful save, the creature takes half as much damage and isn't stunned. An affected creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

In addition, the spell emits a painfully loud chord audible out to 600 feet.

Honk again. The Big Metal Bug makes casts a honk spell.