Mortar, Siege (5e Equipment)

Siege Mortar Huge object Armor Class: 19 Weight: 300,000 lb. Hit Points: 3000 Damage immunities: poison, psychic Cost: Rare Siege mortars are sized-up versions of normal mortars used to attack with indirect fire on enemy positions. Siege mortars typically fire projectiles between 500mm and 600mm, and are usually mounted on stationary fortifications or large slow mobile transport vehicles. While they are incapable of direct fire like a field gun or howitzer, a single shot can level entire enemy fortifications or city blocks. When a target is in the center or close blast zone of a shot, the siege mortar can hit targets behind cover and deal quadruple damage to objects and structures. Before it can be fired, the siege mortar must be loaded and aimed. It takes five actions to load the weapon, two actions to aim it, and one action to fire it. Indirect Fire. The siege mortar fires a shell at a point within 16 miles that does not need to be within the line of sight of creatures operating it. Each creature within 320 feet of the point must make a DC 20 Dexterity saving throw, taking the listed damage on a failed save or half as much damage on a successful one. Blast Zone Distance from Origin Damage Center 80 ft. away or closer 140 (40d6) bludgeoning damage plus 140 (40d6) fire damage. Close 81 to 160 ft. away 70 (20d6) bludgeoning damage plus 70 (20d6) fire damage. Mid-range 161 to 240 ft. away 55 (10d6) bludgeoning damage plus 35 (10d6) fire damage. Far 241 to 320 ft. away 17 (5d6) bludgeoning damage plus 17 (5d6) fire damage.

A siege mortar on a mobile transport vehicle, Source

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