Drain effectiveness

Diablo II Notation Basic Class Skill Item Ally Quest Area Monster Tale Attribute Unit Animation Attack Damage Death Size Radius Light Radius Melee Range adder Missile Chill Drain Damage regen Prevent Heal Altering AI Blinds Target Monster Flee Shrine Curse Aura Unit drain effectiveness is a percentage applied to life and mana returned by % Life Stolen and % Mana Stolen per hit, which is applied separately (and thus multiplicatively) to difficulty level penalties applied to players and mercenaries: 50% drain effectiveness results in life and mana returned to players and mercenaries being reduced to ~1/4 in Nightmare (1/2) and ~1/6 in Hell (1/3). Does not apply to life returned by Life Tap. All mercenaries always have 100% drain effectiveness. Following pets always have 100% drain effectiveness: Blood Golem Dire Wolf Grizzly Spirit Wolf All other pets have 0% drain effectiveness.

0% Drain effectiveness

• Following monsters always have 0% drain effectiveness, making % Life Stolen per hit and % Mana Stolen per hit completely ineffective:

Barricade Barricaded Door Barricaded Tower Catapult

Diablo bone prison Evil Demon Hut Fire Tower Flying Scimitar

Gargoyle Trap Lightning Spire Mummy Sarcophagus Night Marauder

Prison Door Skeleton Skeleton Archer Skeleton Mage

Swarm Willowisp Window Wraith (Act 5)

• Mephisto has 0% drain effectiveness in Nightmare and Hell.
• Diablo and uber Mephisto have 0% drain effectiveness in Hell.

Normal

• All monsters that don’t have 0% drain effectiveness have 100%.

Nightmare

• Diablo, Baal and his clone have 50% drain effectiveness.
• Goatman has 90% drain effectiveness.

66%	75%	85%	100%
Andariel Bone Fetish Finger Mage Greater Mummy Mummy Sand Maggot Egg Wraith (Acts 1-3)	Izual Radament The Summoner Coldworm Abyss Knight Blood Hawk Nest Claw Viper Council Member (Act 5) Doom Knight Fallen Shaman Giant Mosquito Giant Spider Hell Bovine Minion of Destruction Oblivion Knight Reanimated Horde Sand Maggot Sand Maggot Young Sand Raider Scarab Demon Venom Lord 1 Vile Child Vile Mother Zombie	Blood Raven Griswold Putrid Defiler Hephasto the Armorer The Smith Baal's Minion Bat Demon Blood Lord Council Member (Act 3) Death Mauler Fallen Frog Demon Frozen Horror Leaper Megademon 1 Pain Worm Regurgitator Stygian Fury Succubus Suicide Minion Tainted Tentacle Beast Thorned Hulk Vampire	Duriel Nihlathak Korlic Madawc Talic Abominable Baboon Demon 2 Blood Hawk Blow Pipe Fetish Blunderbore Corrupt Rogue Corrupt Rogue Archer CR Spearwoman Demon Imp Festering Appendage Fetish Fetish Shaman Overseer Sabre Cat Siege Beast Slinger Spike Fiend Trapped Soul Vulture Demon Wendigo Zakarum Priest Zakarum Zealot

¹ Ventar the Unholy and Venom Lord minions have 75% drain effectiveness, all other Megademons have 85%.
² Night Marauder has 0% drain effectiveness.

Hell

• Diablo clone and uber Diablo have 15% drain effectiveness.
• Baal, his clone and uber Baal have 20% drain effectiveness.
• Goatman has 80% drain effectiveness.

33%	50%	66%	75%	100%
Andariel Lilith Abyss Knight Bone Fetish Doom Knight Finger Mage Greater Mummy Mummy Oblivion Knight Sand Maggot Egg Wraith (Acts 1-3)	Izual Radament The Summoner Uber Izual Coldworm Blood Hawk Nest Claw Viper Council Member (Act 5) Giant Mosquito Giant Spider Minion of Destruction Sand Maggot Sand Maggot Young Scarab Demon Venom Lord 1 Vile Child Vile Mother Zombie	Griswold The Smith Council Member (Act 3) Fallen Shaman Hell Bovine Megademon 1 Reanimated Horde Sand Raider	Blood Raven Putrid Defiler Hephasto the Armorer Baal's Minion Bat Demon Blood Lord Death Mauler Fallen Frog Demon Frozen Horror Leaper Pain Worm Regurgitator Stygian Fury Succubus Suicide Minion Tainted Tentacle Beast Thorned Hulk Vampire	Duriel Uber Duriel Nihlathak Korlic Madawc Talic Abominable Baboon Demon 2 Blood Hawk Blow Pipe Fetish Blunderbore Corrupt Rogue Corrupt Rogue Archer CR Spearwoman Demon Imp Festering Appendage Fetish Fetish Shaman Overseer Sabre Cat Siege Beast Slinger Spike Fiend Trapped Soul Vulture Demon Wendigo Zakarum Priest Zakarum Zealot

¹ Ventar the Unholy and Venom Lord minions have 50% drain effectiveness, all other Megademons have 66%.
² Night Marauder has 0% drain effectiveness.