Glacial Augment rune Keystone
Rune Inspect

Glacial Augment

Immobilizing an enemy champion will cause 3 glacial rays that slow nearby enemies and reduce their damage to your allies.

Inspiration Tree Data Dragon 16.14.1
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Rune Effect

Immobilizing an enemy champion will cause 3 glacial rays to emanate from them towards you and other nearby champions, creating frozen zones for 3 (+ the immobilizing effect's duration) seconds that slow enemies for 20% (+90% per 100% Heal and Shield Power) (+6% per 100 Ability Power) (+7% per 100 bonus Attack Damage) and reduce their damage by 15% against your allies (not including yourself).

Cooldown: 25s

Position in the Tree

TreeInspiration
TypeKeystone
RowKeystone row

Alternatives in the same row — picking Glacial Augment means giving these up:

Best Champions With Glacial Augment

From real ranked build data — win rate and games refer to the champion's build that includes Glacial Augment.

Builds Featuring Glacial Augment

About Glacial Augment

Glacial Augment is a keystone rune in the Inspiration tree of League of Legends. Its effect: Immobilizing an enemy champion will cause 3 glacial rays that slow nearby enemies and reduce their damage to your allies. In the current patch it appears in real ranked builds for Blitzcrank, TaricBlitzcrank’s Support build runs it at a 50.8% win rate across 208,509 games.

When picking it you give up Unsealed Spellbook and First Strike from the same row, so the choice depends on your champion and matchup. Rune data comes from Riot’s Data Dragon (version 16.14.1) and champion usage is based on real ranked statistics, refreshed automatically.

Glacial Augment — Rune Questions

Immobilizing an enemy champion will cause 3 glacial rays that slow nearby enemies and reduce their damage to your allies.