No Ultimate Spellbook-specific changes; identical to the Summoner's Rift version.
Effects
Unique Passive · Energized
Moving and basic attacking generates Energize stacks, up to 100.
Unique Passive · Galvanize
Dealing ability damage to an enemy champion, with an abilitycast instance, triggers the effects of Energized attacks against them if they are ready.
Unique Passive · Firmament
When fully Energized, your next basic attack on-hit grants you 15 / 12 lethality for 4 seconds and deals bonus physical damage equal to 9% / 7% of the target's current health, capped at 200 against non-champions.
Patch history
26.10 · May 13, 2026
Total cost increased to 3000 g from 2900 g.
Combine cost increased to 963 g from 863 g.
26.9 · Apr 29, 2026
Total cost reduced to 2900 g from 3000 g.
Combine cost reduced to 863 g from 963 g.
Lethality reduced to 10 from 18.
Unique Passive - Galvanize:
New Effect: Damaging enemy champions with abilities
Stats
+55Attack Damage
+10Lethality
+10Ability Haste
Recipe
+++963 g = 3,000 g
Available in
Summoner's Rift · URF · One for All · Swiftplay · Ultimate Spellbook · ARAM · Nexus Blitz · Arena
can trigger
Energized
effects.
Old Effect:Energized stack generation is increased by 75% for distance travelled from dashes, lunges and blinks, as well as while moving in stealth.
The increase doesn't apply for dashes, lunges, or blinks while in stealth (e.g R, Q and R Q). [https://www.reddit.com/r/Rengarmains/comments/1lmuuos/bug_r_jump_gives_less_energized_stacks_with/]
Unique Passive - Firmament:
New Effect: When fully Energized, your next basic attack grants you 15 / 12 lethality for 4 seconds and deals bonus physical damage equal to 9% / 7% of the target's current health, capped at 200 against non-champions.
Old Effect: When fully Energized, your next basic attack deals 100 bonus physical damage on-hit and slows the target by 99% / 20% for 0.75 seconds.
14.19
Total cost increased to 3000 g from 2900 g.
Combine cost increased to 963 g from 863 g.
Ability haste reduced to 10 from 15.
14.12
Bug Fix: Galvanize now triggers from movement during stealth.
Unique Passive - Galvanize: Moving and basic attacking generates Energize stacks, up to 100. Dashing or moving while in stealth generates stacks 75% faster.
Unique Passive - Firmament: When fully Energized, your next basic attack deals 100 bonus physical damage on-hit and slows the target by 99% / 20% for 0.75 seconds.
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