Swiftness

Version 0.31: This article may not be up to date for the latest stable release of Crawl.

Swiftness
Level	3
School1	Air
Source(s)	Book of Air Book of Burglary
Casting noise	2
Spell noise	0
Power Cap	100
Flags	Hasty, Selfench, Utility

Calls forth winds to greatly increase the caster's movement speed. After the effect ends, the caster's movements will be sluggish for a time. “JUST WALK OUT you can leave!!! work social thing movies home class dentist clothes shoppi too fancy weed store cops if your quick friend ships IF IT SUCKS... HIT DA BRICKS!! real winners quit” [sic] -Admin, @dasharez0ne Twitter. March 30, 2018

Swiftness is a level 3 Air spell which temporarily reduces your movement delay, then slows you after.

Useful Info

Grants the Swift status, reducing movement delay by 25%, thus increasing your move speed. However, after the speed boost ends, you will gain -Swift for the same duration, which prevents recasting and makes your movement speed 50% slower. For a regular move speed character, you'll take 0.7 to 0.8 decaAut (avg. 0.75) to move under Swift, and 1.5 decaAut to move under -Swift.

Swiftness can not reduce your movement delay below 0.6 without haste. Therefore, Spriggans receive no benefit (unless under a transformation with slower movement speed). If you happen to have a movement delay of 0.7, the speed fluctuation is smaller: the increase only brings them to 0.6, a 16.7% bonus, while the penalty slows you by 20%.

The Swift status lasts for 11 + 1d(power) / 2 decaAut (max. 30). You cannot recast the spell to increase the duration.

Limitations

• This spell does stack with other sources of speed, such as Haste and the lightning scales.
• Due to their stasis, Formicids cannot cast Swiftness.
• Cheibriados dislikes the use of Swiftness -- using it will incur penance.

Monster Version

While monsters can't cast Swiftness, they instead get the functionally similar Sprint. Sprint boosts the movement speed of the caster, but has no penalty or cooldown afterwards. Player ghosts with Swiftness will have their spells replaced.

History

• Prior to 0.31, standing in water would negate this spell's effects (positive and negative).
• Prior to 0.27, this spell was a level 2 Air spell.
• Prior to 0.26, Swiftness was a dual-school, level 2 Air/Charms spell.
• Prior to 0.25, Formicids could use Swiftness.
• Prior to 0.14, there was no slowdown after the spell ended, but it penalized stealth and trap detection while active. It also reduced move delay by a flat 0.2 instead of by a percentage.
• Prior to 0.13 this spell couldn't be cast while standing in shallow water.