Monster spell

A monster spell is a category of spells that only spell-casting monsters can make use of. Some are unique to this category, while others share properties with other magical items.

Monsters can only cast spells if they are not cancelled and at least level one, and can only cast once every (10 - (monster's level)) turns to a minimum of two turns; they will attempt to cast spells if these conditions are not met, producing a "curse" message. Even with these conditions satisfied, there is a 2 in (monster's level) chance of the spell failing (with five times that chance if the monster is confused).

Monsters that are scared (e.g., by Elbereth) will not use directed spells. If a monster uses a directed spell at you, but you are on a different square than the monster expected, the spell will fail and produce a "curse" message.

Messages

Message	Meaning
Foo points at you, then curses.	The monster attempted to cast a spell before they were able to do so.
Foo points all around, then curses.
Foo points and curses in your general direction.	As above, but the monster cannot see you.
Foo points and curses at your displaced image.	As above, but you are displaced.
You hear a mumbled curse.	As above, but you cannot see the monster.
The air crackles around foo.	The monster cast a spell when able to do so, but the spell failed.
Foo casts a spell!	The monster successfully cast a spell.
Foo casts a spell at you!
Foo casts a spell at a spot near you!	As above, but the monster cannot see you.
Foo casts a spell at your displaced image!	As above, but you are displaced.

Spells

There are three categories of spells that monsters can cast. These are Ray-type spells, Mage spells, and Clerical spells. In vanilla, no creature casts spells in more than one category. In the tables below, Min. level refers to the minimum level required for the monster to be able to cast that spell. The monsters that use the type of spells in each table are listed in the two Monsters column. In the Monsters (at lowest level) column, we assume that the monster is generated at its base level minus one, which is the lowest possible level at which a monster will be randomly generated. In the Monsters (at highest level) column, we assume that the monster is generated at its base level times 3/2, which is the highest possible level at which a monster will be randomly generated. In both cases, each monster can cast the spell on the line it appears, as well as every spell above it. It is still theoretically possible for monsters to cast spells that appear below their names in the table, if they drink enough potions of gain level. The spell Double Trouble can only be used by the Wizard of Yendor. As an example, a golden naga is guaranteed to be able to cast Psi bolt, Cure self, Haste self, Stun, Disappear, Drain strength and Destroy armor. It may be able to cast Curse items and Aggravate, if it is generated at a high enough level.

Monster spellcasting abilities are dependent on their current level, not their original level, so draining a monster will remove its ability to cast higher-level spells. However, most important spellcasters are immune to life drainage, and those that aren't generally have very high MR, making the spell nearly useless. Stormbringer and the Staff of Aesculapius bypass monster MR, though both will kill most non-resistant monsters quickly enough that the effect on their spellcasting is not generally that noticeable.

Mage Spells

Spell	Min. level	Directed	Monsters (at lowest level)	Monsters (at highest level)
Psi bolt	1	Y	kobold shaman
Cure self	2		barrow wight, orc shaman, gnomish wizard
Haste self	3			kobold shaman
Stun	4	Y	guide, apprentice	barrow wight, orc shaman, gnomish wizard
Disappear	5
Drain strength	7	Y		guide, apprentice
Destroy armor	9	Y	golden naga, lich, nalfeshnee
Curse items	11	Y	demilich
Aggravate	14		ki-rin, titan, Ixoth, Dark One, Minion of Huhetotl, Thoth Amon, Chromatic Dragon, Nalzok	golden naga
Summon nasties	16		master lich, Archon, Neferet the Green	lich, nalfeshnee
Touch of death	21	Y	arch-lich, Orcus, Dispater, Demogorgon	demilich, master lich, arch-lich, ki-rin, titan, Archon, Ixoth, Dark One, Minion of Huhetotl, Thoth Amon, Chromatic Dragon, Nalzok, Neferet the Green, Orcus, Dispater, Demogorgon
Double Trouble	19/unique		Wizard of Yendor	Wizard of Yendor

Clerical Spells

Spell	Min. level	Directed	Monsters (at lowest level)	Monsters (at highest level)
Open wounds	1	Y
Cure self	2
Confuse	3	Y	abbot, acolyte
Paralyze	5	Y
Blind	6	Y		abbot, acolyte
Summon insects	9
Curse items	10	Y	aligned priest
Lightning	12	Y
Fire pillar	13	Y
Geyser	14	Y	high priest, Grand Master, Master Kaen, Arch Priest	aligned priest, high priest, Grand Master, Master Kaen, Arch Priest

Ray-type spells

Ray-type spells come in three varieties (though only two are in use). They can be cast from afar, and when used this way, act the same as wands or breath weapons. When cast from an adjoining square, they act as melee attacks and cannot be reflected, but the appropriate resistance will still nullify them.

• Three creatures use magic missile: Angels, Yeenoghu and the Oracle (the Oracle's version is passive and will only occur in response to a melee attack). Magic resistance is proof against this attack. The message is, "You are hit by a shower of missiles!" "The missiles bounce off!" if you have magic resistance.
• Asmodeus, and no one else, has a cold attack. "You are covered in frost" when hit by this attack. Cold resistance nullifies it.
• The source code also supports a fire attack. "You are enveloped in flames" when hit by this attack, and fire resistance nullifies it. No monster in vanilla has this attack, but in SLASH'EM it is used by fire vampires.

SLASH'EM

SLASH'EM has many new spellcasting monsters. It also introduces two new mage spells:

• Call undead, which can be used by all liches (and no other monsters);
• Create pool, which can be used by monsters of level 13 or higher.

Slash'EM Extended

Slash'EM Extended reduces the chances of spellcasting monsters to actually cast spells, especially if the spell summons hostile monsters. However, it also introduces an array of new clerical spells. All of these can be used by monsters of level 9 or higher, except Petrify which requires the monster to be at least level 14.

• Petrify, causing the player character to start turning to stone (7 turns to live);
• Intrinsic loss, which can remove a random intrinsic (similar to being hit by a gremlin);
• Aggravate monster (copy of the arcane spell);
• Dark aura, causing the area around the player to become unlit;
• Acid trip, making the player hallucinate for some (more) turns;
• Create traps, creating random traps around the player's location;
• Relocation, teleporting the player to a random empty location on the level, bypassing teleport control and no-teleport restrictions;
• Mana drain, reducing the player's current Pw and sometimes maximum Pw as well;
• Disengrave, removing an active Elbereth engraving underneath the player;
• Disarm, removing the player's weapon from their hands;
• Slow, removing speed intrinsic and non-permanent extrinsics;
• Garbage spam, surrounding the player with items, doors and staircases that are actually mimics;
• Charming seduction, summoning nymphs around the player which may immediately begin stealing items;
• Piercing ceiling, summoning piercers around the player;
• Rat swarm, summoning a bunch of rodents;
• Demonic spiders, summoning a bunch of spiders (which often start out concealed under an item);
• Can of worms, summoning a bunch of worms (may also start out concealed);
• Flapping bats, summoning a bunch of bats;
• Hulking brutes, summoning umber hulks and shambling horrors (very dangerous due to their randomized attacks);
• Court summoning, summoning human enemies (ones represented by the @ character), including werecreatures and player-character monsters;
• Golem mastery, surrounding the player with random golems;
• Deep sea trouble, creating eels (very dangerous if there is water on the level);
• Mystic nature, creating arctic fern spores, killer tomatoes and other monsters represented by the % character.

Also, the Geyser spell will cause the player's inventory to become wet, and on a lethe level possibly disenchant items or transform them into potions/scrolls of amnesia. There are also the following new arcane spells, which can be cast by monsters of level 9 or higher:

• Damage armor, which works like destroy armor but only damages a worn armor item by one stage (can destroy the item if it was thoroughly eroded already), and fooproof armor items resist;
• Wither, which works like damage armor but also damages and eventually destroys fooproof items as well as those outright immune to damage (dragon scale mail for example).

The Call Undead arcane monster spell isn't restricted to liches in Slash'EM Extended. Instead, all arcane spellcasters that are at least level 10 can cast it.

See also

• List of monster spells

References

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