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Slow immune icon Slow resist (or Slow resistance) is an unofficial champion statistic that reduces the strength of Slow icon slows. It can be obtained from champion abilities, items, and runes, and stacks multiplicatively. It applies to already active slows. It affects self-slows (e.g, Defensive Ball Curl Defensive Ball Curl, Overdrive Overdrive, Piercing Arrow Piercing Arrow). It should not be confused with Tenacity icon Tenacity, which only reduces the duration of slows.

Increasing Slow Resist

Items

Champion abilities

Runes

Slow immune 2 Slow Immunity

See also: Crowd_control#Immunity

Slow immunity is different from 100% slow resist as it prevents Slow icon slows from being applied in the first place, and in most cases Cripple icon cripples too.

Champion abilities

Statuses

Items

Formulas

These formulas can calculate how much slow resist you have, based on your movement speed and on the slow applied to you.

  • Slow Resist is the amount of slow resist you currently have.
  • Final MS is your movement speed after being slowed, already considering your slow resist.
  • BaseMS is your base movement speed.
  • BonusMS is the sum of all additive flat movement speed bonuses.
  • MS Multiplier is the sum of all additive percent movement speed bonuses.
  • Slow is the strongest slow currently applied on your champion.
  • Slow Resist, MS Multiplier, and Slow are percentages (e.g. 50% is 0.5 in the formula).

Formula one:

$ \pagecolor{black}\color{White} Movement\ Speed \leq 220: $ $ \pagecolor{black}\color{White} Slow Resist = 1 - ({{1 - {{FinalMS - 110} \over {(BaseMS + BonusMS) \times (1 + MS Multiplier) \times 0.5}}}) \div {Slow}} $


Formula two:

$ \pagecolor{black}\color{White} 220 \leq Movement\ Speed \leq 415: $ $ \pagecolor{black}\color{White} Slow Resist = 1 - ({{1 - {{FinalMS} \over {(BaseMS + BonusMS) \times (1 + MS Multiplier)}}}) \div {Slow}} $


Formula three:

$ \pagecolor{black}\color{White} 415 \leq Movement\ Speed \leq 490: $ $ \pagecolor{black}\color{White} Slow Resist = 1 - ({{1 - {{{{FinalMS - 475} \over {0.5}} + 490} \over {(BaseMS + BonusMS) \times (1 + MS Multiplier)}}}) \div {Slow}} $


Formula four:

$ \pagecolor{black}\color{White} Movement\ Speed \geq 490: $ $ \pagecolor{black}\color{White} Slow Resist = 1 - ({{1 - {{{{FinalMS - 415} \over {0.8}} + 415} \over {(BaseMS + BonusMS) \times (1 + MS Multiplier)}}}) \div {Slow}} $

Notes

Relevant mathematics
  • A champion with Boots of Swiftness item Boots of Swiftness, a movement speed of 400 and who is affected by a 40% Slow icon slow will have a movement speed of 400 × (1 − (0.4 × 0.75)) = 280, which is equal to a 30% slow without slow resist.

Last updated: February 19, 2020, patch V10.4

1 - ((1 - Purge 0.4) × (1 - Boots of Swiftness item 0.25) × (1 - Phase Rush rune 0.75) × (1 - Unflinching rune 0.2) × (1 - Unflinching rune 0.15)) = 92.35%

Patch History

V10.4
  • Now stacks multiplicatively instead of additively. Can no longer go above 100% slow resist, thus increasing movement speed with slows.
V1.0.0.145 added
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