[FAQ] • [doc]
Oldak coil detail

The oldak coil is an Invention device that is a part of the cave goblin tech tree. It requires 55 Goblin Currency and level 70 Invention to unlock. It is a Magic variant of the dwarf multicannon capable of frequently hitting small groups of enemies at medium range. The experience gained from using the Oldak coil is dependent on the player's XP selection in their combat settings.[1] Unlike the dwarf multicannon, it takes up only one space in the inventory.

Success in creating the blueprints earns 10518 base Invention experience, or 52591 experience at perfect optimization.

Oldak coil requires cannonballs as fuel, consuming one every time it attacks. When active, any enemy that closes into range will be repeatedly attacked by bolts of lightning and it can hit multiple enemies at once. It benefits from the same perks as the multicannon, increasing the cannonball limit to 60 or 90 and allowing it to restock automatically if you are in range.

Unlike the dwarf multicannon, the Oldak coil cannot be reclaimed from a non-player character if lost; players must build another one. For example, it will be lost permanently if it decays. However, it can be used indefinitely if you keep picking up and re-deploying it when you receive the decay warning.

The Oldak coil strikes all targets in range at once (as opposed to rotating, like the dwarf multicannon), but the range is shorter (3 squares from the edge of the cannon, 9x9 area total).


Oldak coil Oldak coil
InventionSmithingMake-X GE icon
2,760 XP250 XP-
Invention Invention level70
Blueprint (Invention) Discover: Oldak coil
P2P icon Members onlyYes
Rune barRune bar213,73827,476
Metallic partsMetallic parts150N/A-
Heavy componentsHeavy components15N/A-
Imbued componentsImbued components15N/A-


  • It is likely a reference to the Tesla coil which produces arcs of electricity.
  • When used in the Tower of Voices in Prifddinas, it reads "The vibrations from Seren's song would stop the cannon from functioning here."
  • Originally, it required 1725 Inspiration to discover.


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