Arcane Cannon (Machine)

Heavy. The Arcane Cannon cannot be moved during combat.

Operators Required. The Arcane Cannon can only be fired after two actions have been spent to load and calibrate it. This can be done by at max two operators.

Fire! (Recharge: Special) The operators for the arcane cannon can choose one of the following attacks:

Arcane Beam. The cannon discharges fire in a line 300 feet long and 10 feet wide. Each creature in the area must make a DC 15 Dexterity saving throw, taking 22 (4d10) force damage on a failed save, or half as much damage on a successful one. 

Lightning Shot. The cannon shoots a ball of lightning to a point you can see within 1,200 feet of the cannon. The lightning then expands to form a 20-foot-radius sphere centered on that point. Each creature in that area must make a DC 15 Dexterity saving throw, taking 33 (6d10) lightning damage on a failed save, or half as much damage on a successful one. Creatures wearing metal armor have disadvantage on the save.

Corrosive Spray. The cannon expels poison gas in a 60-foot cone. Each creature in that area must make a DC 15 Dexterity saving throw, taking 16 (3d10) acid damage on a failed save, or half as much damage on a successful one. In addition, a creature that fails its saving throw takes 11 (2d10) acid damage at the start of each of its turns; a creature can end this damage by using its action to wash off the acid with a pint or more of water.