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Version 0.19: This article may not be up to date for the latest stable release of Crawl.
Level 2
School1 Conjuration
School2 Air
Casting noise 2
Spell noise 15 + (MP consumed)

Thunderbolt is a level 2 Conjurations/Air Magic spell, but as it is only available through the lightning rod, its performance is dependent on Evocations. This spell has a variable mana cost. The first use will always cost 2 charges. Any consecutive use will then spend all available charges in the rod, but never more than 5. After the first use, it's possible to activate the rod even with only one charge left, though doing so with less than 5 charges remaining will result in significantly less spellpower.

Cost: 2 (1-5) MP and some food (95-Evoc×10, but never less than 10)
Spellpower: 5 + 3 × Evocations
Damage: {MP spent}d{(30+Spellpower/6)/(arc_length+2)}; arc_length is always at least 1
Accuracy: 10+Spellpower/20 for the first shot; 1000 for any consecutive shot
Range: 6

See the lightning rod article for details on this spell's behavior.


This spell was added to the game in 0.11.

In ancient versions of Crawl, there was a level 6 Holy Magic/Air Magic spell with the same name, and followers of the Shining One also had an ability called Thunderbolt.