Difference between revisions of "Staff of Olgreb"

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{{item
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{{version031}}
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|itemtype=Magical staves
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{{flavour|A staff which was once wielded by the great alchemist Olgreb.}}
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|name=staff of Olgreb
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[[File:Staff of olgreb.png]] '''''the +9 staff of Olgreb'''''
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|cost=
 
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|weight=15
 
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}}
 
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{{flavour|It was the magical weapon wielded by the mighty wizard Olgreb before he met his fate somewhere within these dungeons. It grants its wielder resistance to the effects of poison and increases their ability to use venomous magic, and carries magical powers which can be evoked.}}
 
  
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The '''staff of Olgreb''' is a rare [[magical staff]] which aids in the casting of [[Poison Magic]], much like a [[staff of poison]] does. Equipping it will cause it to auto-identify. Any poison spell cast while wielding the staff of Olgreb will gain a boost to [[spell power]], usually causing it to deal more damage and/or last longer (the specific impact of this, if any, depends on the spell). Additionally, the wielder is protected from poison, gaining [[poison resistance]].
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+9 [[staff]]
  
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The staff can be used in combat, functioning as a [[quarterstaff]] with enchantment bonuses to accuracy and damage equal to (Poison Magic/3). Like a staff of poison, it can poison its target in melee, although with greater likelihood:
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[[Spell enhancer|Enhances]] [[Alchemy]]<br>
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Provides immunity to [[poison]]<br>
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May deal poison damage and poison in melee; damage partially pierces resistance<br>
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Provides an ability to cast [[Olgreb's Toxic Radiance]]
  
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{{crawlquote|'''Chance to Poison''': Poison Magic×12.5%, with a separate 50% chance if that fails; even poison-resistant [[natural|animals]] and [[plants]] can be poisoned if an additional Poison Magic×12.5% chance is successful.}}
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==Mechanics==
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When striking an enemy, the staff of Olgreb has a chance to deal resistance-piecing poison damage, based on [[Evocations]] (but not [[Alchemy]]):<ref>{{source ref|0.30.1|art-func.h|251}}</ref>
  
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You can also evoke it to cast [[Olgreb's Toxic Radiance]] against everything in your [[line of sight]]. When used successfully, there is a chance that you will also cast a second spell ([[Venom Bolt]]) at the same time against a target of your choosing.
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{{crawlquote|'''Activation Rate''': Evocations × 10%<br>'''Extra Damage''': 1d(Evocations × 1.875) - 1<br>30% of this damage is irresistible.<br>Target also receives the poison status - this ignores [[poison resistance]]}}
  
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{{crawlquote|'''OTR Success Rate''': [[Evocations]]×16% (100% at 7 Evocations)<br>'''Venom Bolt Success Rate''': Evocations×10% (100% at 10 Evocations)<br>'''Spell Power''': 10+(Evocations×8)<br>'''Cost''': 4 [[MP]], 50 [[food]]}}
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You can also use an '''a'''bility to cast [[Olgreb's Toxic Radiance]]:<ref>{{source ref|0.30.1|ability.cc|2413}}</ref>
  
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You can improve your melee performance with this staff by training [[Fighting]] and [[Staves]].
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{{crawlquote|'''OTR Success Rate''': 100%<br>'''Spell Power''': (1 + Evocations) × 5<br>'''Cost''': 4 [[MP]]}}
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==Desirability==
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If you plan on using lots of [[Alchemy]] magic, the '''staff of Olgreb'''<ref>{{source ref|0.30.1|art-data.txt|253}}</ref> is an excellent find. Not only does it enhance these spells, but the melee damage can be decent if you train some Staves and Evocations.
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For those who never plan on using Alchemy, this staff can still be quite useful:
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*It can evoke [[Olgreb's Toxic Radiance]], even with 0 skill training. OTR is a devastatingly strong AOE spell in the early-game (Dungeon, [[Lair]], [[Orcish Mines|Orc]], and [[Spider's Nest]]). While the staff takes up the weapon slot, you can always swap it in or out.
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*It is one of the few sources of poison ''immunity''. In addition to all the benefits of rPois, it prevents the paralytic poison of [[hornet]]s and [[jorogumo]] 100% of the time. When tackling [[Spider's Nest|Spider]] or [[Snake]], some form of poison resistance/immunity is nice to have.
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The staff will occasionally spawn in a special [[vault]] full of assorted poisonous enemies ([[list of arthropods|bees, spiders,]] and [[list of snakes|snakes]]). This can be an excellent find early on, though attempting to reach the staff at the end without already having a source of poison resistance can be risky. [[Frozen Ramparts]] is quite effective here, since it ignores the high evasion such creatures tend to share, nothing in the vault resists cold (and it will slow the cold-blooded snakes), and the tight quarters will force multiple enemies to take damage each turn.
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==History==
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*Prior to [[0.31]], the staff boosted [[Poison Magic]] instead of Alchemy.
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*Prior to [[0.28]], the staff had a fail check for evoking [[Olgreb's Toxic Radiance]] (but only 5 [[Evocations]] skill was required to get 100% success rate). Also, OTR could be activated from the [[v]] menu, instead of being an '''a'''bility.
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*Prior to [[0.25]], the staff of Olgreb had a chance to cast [[Venom Bolt]] as well as Olgreb's Toxic Radiance when evoked, and only had a resistance-piercing chance to inflict poison instead of dealing additional poison damage.
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*Prior to [[0.19]], its enchantment level was based on your skill with [[Poison Magic]] (Poison Magic/3).
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*Prior to [[0.14]], it only granted poison resistance instead of complete immunity.
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==References==
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<references />
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[[Category:Unrands]]
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[[Category:Staves]]

Latest revision as of 21:44, 23 October 2024

Version 0.31: This article may not be up to date for the latest stable release of Crawl.
A staff which was once wielded by the great alchemist Olgreb.

Staff of olgreb.png the +9 staff of Olgreb

+9 staff

Enhances Alchemy
Provides immunity to poison
May deal poison damage and poison in melee; damage partially pierces resistance
Provides an ability to cast Olgreb's Toxic Radiance

Mechanics

When striking an enemy, the staff of Olgreb has a chance to deal resistance-piecing poison damage, based on Evocations (but not Alchemy):[1]

Activation Rate: Evocations × 10%
Extra Damage: 1d(Evocations × 1.875) - 1
30% of this damage is irresistible.
Target also receives the poison status - this ignores poison resistance

You can also use an ability to cast Olgreb's Toxic Radiance:[2]

OTR Success Rate: 100%
Spell Power: (1 + Evocations) × 5
Cost: 4 MP

Desirability

If you plan on using lots of Alchemy magic, the staff of Olgreb[3] is an excellent find. Not only does it enhance these spells, but the melee damage can be decent if you train some Staves and Evocations.

For those who never plan on using Alchemy, this staff can still be quite useful:

  • It can evoke Olgreb's Toxic Radiance, even with 0 skill training. OTR is a devastatingly strong AOE spell in the early-game (Dungeon, Lair, Orc, and Spider's Nest). While the staff takes up the weapon slot, you can always swap it in or out.
  • It is one of the few sources of poison immunity. In addition to all the benefits of rPois, it prevents the paralytic poison of hornets and jorogumo 100% of the time. When tackling Spider or Snake, some form of poison resistance/immunity is nice to have.

The staff will occasionally spawn in a special vault full of assorted poisonous enemies (bees, spiders, and snakes). This can be an excellent find early on, though attempting to reach the staff at the end without already having a source of poison resistance can be risky. Frozen Ramparts is quite effective here, since it ignores the high evasion such creatures tend to share, nothing in the vault resists cold (and it will slow the cold-blooded snakes), and the tight quarters will force multiple enemies to take damage each turn.

History

  • Prior to 0.31, the staff boosted Poison Magic instead of Alchemy.
  • Prior to 0.28, the staff had a fail check for evoking Olgreb's Toxic Radiance (but only 5 Evocations skill was required to get 100% success rate). Also, OTR could be activated from the v menu, instead of being an ability.
  • Prior to 0.25, the staff of Olgreb had a chance to cast Venom Bolt as well as Olgreb's Toxic Radiance when evoked, and only had a resistance-piercing chance to inflict poison instead of dealing additional poison damage.
  • Prior to 0.19, its enchantment level was based on your skill with Poison Magic (Poison Magic/3).
  • Prior to 0.14, it only granted poison resistance instead of complete immunity.

References

  1. ↑ art-func.h:251 (0.30.1)
  2. ↑ ability.cc:2413 (0.30.1)
  3. ↑ art-data.txt:253 (0.30.1)
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