Fortress Blast

Version 0.33: This article is up to date for the latest stable release of Dungeon Crawl Stone Soup.

Fortress Blast
Level	6
School1	Forgecraft
Source(s)	Book of the Fortress Book of Power
Casting noise	6
Spell noise	20
Power Cap	75
Range	2
Flags	Area, Destructive

Draws upon the caster's own physical integrity to create a kinetic shockwave that damages foes in a large area. The caster is locked in place for several turns as the shockwave starts to form, and the spell will be cancelled if they are displaced during that time, but they may otherwise perform other actions freely. Spellpower causes the spell to complete more quickly, but the damage depends entirely upon the caster's AC.

Fortress Blast is a level 6 Forgecraft spell which locks the user into place for a few turns, then creates a 5x5 explosion with damage based entirely on AC.

Useful Info

Locks you into place for 70 - 10*power/25 aut, after which a 5x5 explosion centered on the caster occurs. You are allowed to do other actions that don't rely on movement for the duration, including teleport/blink. If something displaces you during the channeling, e.g., an elephant tramples you, the fortress blast will dissipate harmlessly.

You aren't hurt by the explosion, and it deals 6d(4 + 3*[AC^1.343]/17) physical damage (max. 6d39 at 70 AC). Notably, this means that the damage per AC ratio is non-linear, with each successive point of AC having a greater effect than the last.

Strategy

Not being able to retreat is quite dangerous in Crawl, so this spell should not be used lightly - try to lure enemies into a known, cleared out area first. This also helps mitigate this spell's loud noise.

The spell is especially good for species that gain extra AC as they level up, like Gargoyles and Nagas.

History

• This spell was added in 0.33.