Enemy Resistance

Diablo II Notation Basic Class Skill Item Ally Quest Area Monster Tale Attribute Unit Animation Attack Damage Death Crushing Blow Deadly Strike Enhanced Minimum Maximum Adds Damage Damage + % Damage to Demons to Undead Magic Fire Lightning Cold Poison Skill Damage ATD/ATLD DR/MDR Resistance Maximum Enemy Resist Sunder Immune Absorb Enemy Fire Resistance Enemy Lightning Resistance Enemy Cold Resistance Enemy Poison Resistance -% Enemy Resistance decreases enemy resistance, but only if < 100%. It only applies to any damage applied by the user. When present on two weapons, the percentages of both are summed and applied to the enemy.[1] [2] It does not apply to damage applied by pets summoned by the user (including sentry traps), with the sole exception of Hydra. Decreasing enemy resistance can have a significant impact on damage, particularly after removing an immunity. For example, casting level 7 Lower Resist decreases Resist 100% to 90%, so the immunity is removed but only 10% damage is applied; -15% Enemy Resistance decreases it from 90% to 75% to increase damage from 10% to 25%, multiplying it by 2.5 (25/10); another -25% Enemy Resistance decreases it from 75% to 50% to increase damage from 25% to 50%, multiplying it by 2 (50/25) or 5 (50/10) overall. The table below lists multipliers of damage (or effective life) as resistance decreases (or increases): Resistance Initial Final 0% 25% 50% 75% 80% 85% 90% 95% 0% 1.00 1.33 2.00 4.00 5.00 6.67 10.00 20.00 25% 1.33 1.00 1.50 3.00 3.75 5.00 7.50 15.00 50% 2.00 1.50 1.00 2.00 2.50 3.33 5.00 10.00 75% 4.00 3.00 2.00 1.00 1.25 1.67 2.50 5.00 80% 5.00 3.75 2.50 1.25 1.00 1.33 2.00 4.00 85% 6.67 5.00 3.33 1.67 1.33 1.00 1.50 3.00 90% 10.00 7.50 5.00 2.50 2.00 1.50 1.00 2.00 95% 20.00 15.00 10.00 5.00 4.00 3.00 2.00 1.00 Of course, it can result in Resist < 0% as well, decreasing it to the floor of -100%. Reference Onderduiker, Monster Resistances and Immunities Guide (Technical Discussion)