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Revision as of 08:16, 9 June 2018 by Arvy (talk | contribs) (Fixup damage)
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Version 0.19: This article may not be up to date for the latest stable release of Crawl.
Irradiate.png Irradiate
Level 5
School1 Conjuration
School2 Transmutation
Source(s) Book of Alchemy
Book of Transfigurations
Casting noise 4
Spell noise 0
Power Cap 200
Range 1
Hated By Zin
Flags Area
Transmutes an ultra-thin layer of the caster's skin (or equivalent) directly into pure magical energy, blasting adjacent creatures and bypassing any armour they may have. It heavily deforms its targets, weakening them and reducing their armour. The caster is not left entirely unaffected; some of the magic lingers, enough to leave them dangerously contaminated after a few castings.

“Reflex in the sky warn you you're gonna die
Storm coming, you'd better hide from the atomic tide
Flashes in the sky turns houses into sties
Turns people into clay, radiation minds decay”
-Black Sabbath, “Electric Funeral”. 1970.

Irradiate is a level 5 Conjurations/Transmutations spell that essentially blasts all tiles adjacent to you with pure magical energy, dealing 6d(30+Power/2) irresistible damage and malmutating them. Multiple applications of this effect stack, but are quite risky to cast - each casting of Irradiate afflicts the caster with 1 - 1.5 points of magical contamination. Since 5 points is enough to start glowing, it can usually be cast 3 or 4 times safely.

Tips & Tricks

  • If you accidentally cast Irradiate one time too many, quaffing a potion of cancellation should drop you back into the safe zone. Whether it's worth using up the potion to do so, however, is questionable.


Prior to 0.19 the contamination caused was significantly higher (was 1.5 to 3).

Irradiate was added in 0.16.