Souls
Certain super unique monsters in certain difficulties are able to drop their soul on death. There are two tiers of soul drops, lesser souls and greater souls.
Contents
Lesser Souls
Lesser souls give you small passive bonuses on your Annihilus. Typically there are 2 per act per difficulty, usually dropped from super unique monsters related to a quest. There are also other lesser souls available from challenges and other custom content.
Normal
Act 1
Corpsefire - Den of evil (5% fire resist)
Griswold - Tristram (500 defense)
Act 2
Fangskin - Claw Viper Temple level 2 (5% lightning resist)
The Summoner - Arcane Sanctuary (5% faster cast rate)
Mechanized Destroyer - Stony Tomb level 2 (5% chance of staggering blow)
Act 3
Sszark the Burning - Spider Cavern (5% fire resistance)
Ismail Vilehand - Travincal
Act 4
Izual - Plains of Despair (+50 to life)
Infector of Souls - The Chaos Sanctuary (10% faster hit recovery)
Act 5
Shenk the Overseer - The Bloody Foothills (5% minion damage and life)
Lister the Tormentor - Throne of Destruction
Nightmare
Act 1
Rakinishu - Stony Fields
The Countess - The Forgotten Tower Level 5
Act 2
Radament - Sewers level 3 (poison resistance)
Coldworm the Burrower - The Maggot Lair level 3 (5% poison resistance)
Act 3
Geleb Flamefinger - Travincal (10% elemental damage)
Bremm Sparkfist - Durance of Hate level 3
The Swamp King - Swampy Pit level 3 (5% all resistances)
Act 4
Hephasto the Armorer - River of Flame (500 defense)
Lord De Seis - The Chaos Sanctuary
Act 5
Eldritch the Rectifier - Bloody Foothills (5% run speed)
Frozenstein - Frozen River
Hell
Act 1
Blood Raven - Burial Grounds (5% minion damage and life)
The Smith - The Barracks (500 defense)
Act 2
Blood Witch the Wild - Halls of the Dead level 3
Fire Eye - Pallace Cellar level 3
Act 3
Toorc Icefist - Travincal
Wyand Voidbringer - Durance of Hate level 3
Act 4
Grand Visier of Chaos - Chaos Sanctuary
Act 5
Pindleskin - Nihlathak's Temple
Nihlathak - Halls of Vaught
Bartuc the Bloody - Throne of Destruction
Spawn of Ifrit - Icy Cellars
Challenges
Challenge souls :
- Act 2 normal, Rocky Waste, max lvl 30.
- Act 3 nightmare, Swampy pits, Flayer jungle, max lvl 60.
- Act 5 hell, Icy Cellar, Ancients Way, max lvl 80
Greater Souls
Act bosses each drop their greater soul, which is a socketable soul that you can put inside your Annihilus. Mephisto's soul drops in normal, Andariel and Baal in nightmare, and Duriel and Diablo in hell.
List of Greater Souls and their bonuses can be found in this page: Uniques/Greater Souls