Swiftness

Version 0.16: This article may not be up to date for the latest stable release of Crawl.

Swiftness
Level	2
School1	Air
School2	Charms
Source(s)	Book of Air Book of Burglary
Casting noise	1
Spell noise	0

This spell imbues its caster with the ability to achieve great movement speeds. But this speed comes at a price: the caster's movements will be sluggish for a time after the speed ends.

Swiftness is a level 2 Charms/Air Magic spell which reduces your movement delay by 2, making it easier to escape combat or pursue fleeing enemies. However, after the speed boost ends, your movement speed will be 33% slower for the same amount of time. For centaurs, and anyone with movement delay 7, the fluctuation is smaller: ±16% instead of ±33%.

Note the difference between this spell and Haste, the level 6 Charms spell which speeds all actions (movement, attacking, spellcasting), at the cost of magic contamination.

Limitations

• This spell does stack with other sources of speed, such as Haste and boots of running.
• Be aware that if you move onto water (without being airborne), your Swiftness is temporarily ineffective.
• Under normal circumstances, spriggans receive no benefit from this spell and centaurs only receive a 1 point bonus to move delay due to the in-game cap on movement speeds. If your spriggan or centaur is moving slowly for some reason, however, Swiftness will function correctly.
• Because swiftness increases speed, its use runs counter to Cheibriados's domain and he dislikes it accordingly.

History

Prior to 0.14, there was no slow down after the spell ended, but it penalized stealth and trap detection while active.

Prior to 0.13 this spell couldn't be cast while standing in shallow water.