Staff of Olgreb
| Type | Magical staves |
|---|---|
| Name | staff of Olgreb |
| Icon | 
|
| A staff which was once wielded by the mighty wizard Olgreb.It increases the power of its wielder's poison magic and can be evoked to activate its own venomous spells. Its touch may poison even resistant creatures, and it grants protection from all venoms when wielded. |
The +9 staff of Olgreb is a rare magical staff which aids in the casting of Poison Magic, much like a staff of poison does. 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 rendered immune to poisons while holding the staff.
It is also the only way one can obtain poison immunity, besides starting as undead or a Gargoyle and casting Necromutation.
The staff can be used in combat, functioning as a +9 staff. You can improve your combat performance with this weapon by training Fighting and Staves. Like a staff of poison, it can poison its target in melee, and with greater likelihood:
Chance to Poison: Poison Magic×12.5%, with a separate 50% chance if that fails; even poison-resistant animals and plants can be poisoned if an additional Poison Magic×12.5% chance is successful.
You can also evoke it to cast Olgreb's Toxic Radiance. When used successfully, there is a chance that you will simultaneously cast Venom Bolt against a target of your choosing.
OTR Success Rate: (1+Evocations)×16% (100% at 5 Evocations)
Venom Bolt Success Rate: (1+Evocations)×5% (100% at 19 Evocations)
Spell Power: 5+Evocations×5
Cost: 4 MP, 50 food
Desirability
If you plan on using lots of Poison Magic, this is an excellent item to find. Not only will it enhance your poisonous spells, the chance of piercing poison resistance can come in handy for fighting some of the nastier poison-resistant enemies. It's far superior to a plain staff of poison.
Even if you don't want to use poison magic much, you may still wish to train Evocations in order to use the staff's evocable abilities. At 10 Evocations, you can essentially cast two spells at once for only 4 MP and a relatively low food cost. Obviously, this is less helpful against anything poison-resistant, but it can be extremely useful against large groups of enemies, especially swarms of insects or spiders. Additionally, the poison immunity granted by the staff can be extremely helpful in surviving places like the Spider's Nest or Snake Pit.
History
Prior to 0.19, its enchantment level was (Poison Magic/3).
Prior to 0.14, it only granted poison resistance.
