Lehudib's Crystal Spear

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For the obsolete unrandom artefact, see Lehudib's crystal spear (unrand).

Lehudib's Crystal Spear
Level	8
School1	Conjuration
School2	Earth
Source(s)	Book of Annihilations
Casting noise	8
Spell noise	8

Spell Details
Damage Formula	10d(2.33+Power/10)
Max Damage	10d23
Max Power	200
Range	4
Targeting	Beam
To-hit
Special	N/A

This spell hurls a lethally sharp bolt of crystal.

Much more than merely a more powerful version of Iron Shot, this is the ultimate single target damage spell, found only in the Book of Annihilations. Conjurers of all walks often branch into Earth Magic merely for the sake of this spell and its irresistible damage. The only drawback is its high casting difficulty. At maximum power it deals up to 230 damage, strongly biased towards the average of around 117: 10d22 with a 30% chance of 10d23.

Monster spell

Certain feared monsters in the dungeon can also cast crystal spear, often with the ability to single- or two-shot unprepared adventurers.

monster_spell_damge = 3d(16 + power / 10)
  where power = 12 * monster_hit_dice

For quick reference, the monsters that can cast crystal spear:

creature	hit dice	damage
Deep elf mage	4	3d20 (3-60)
Erolcha	6	3d23 (3-69)
Ogre mage	10	3d28 (3-84)
Wizard	10	3d28 (3-84)
Roxanne	14	3d32 (3-96)
Deep elf annihilator	15	3d34 (3-102)
Draconian annihilator	15	3d34 (3-102)
Lich	20	3d40 (3-120)
Ancient lich	27	3d48 (3-144)

History

There was also an unrandart known as Lehudib's Crystal Spear, a +6,+6 spear of returning that enhances the wielder's intelligence. In-game, it was unclear whether the weapon inspired the spell or vice versa; in reality, the artefact was a pun on the older spell (according to a comment in art-data.txt).