Siege Drill (5e Equipment)
From D&D Wiki
Wondrous Item, very rare
The siege drill is an armored, self-powered vehicle with an immense drill mounted on the front. It weighs 1200 pounds, and is powered by an arcane engine or a steam engine depending on your campaign. A hatch at the rear allows two Medium creatures to crawl inside. It is designed to dig tunnels underneath fortifications, but it might be found in use by miners or dwarves undertaking some extravagant project.
The siege drill is a huge object with the following statistics:
To be used as a vehicle, the siege drill requires one pilot. The pilot's chair has three levels, and the pilot can use their action to pull one lever with the following effects:
The siege engine cannot steer left or right, so must be initially set in the right direction by physically turning it from outside. If the siege engine moves forwards into a space occupied by a creature, that creature can use their reaction to move 5 feet out of its path. If a creature or object is unable to move out of the way, or is forced against the drill, the following attack is made:
Huge Drill: Melee Weapon Attack: +8 to hit, range 5 ft., one target. Hit: 10d10 slashing damage.