Lightning: Attacks and damaging spells triggers a lightning blast inflicting 90 (+10 x level) bonus magic damage (4 seconds cooldown). Max of once every four seconds.
Shield: Grants a 212.5 (+12.5 x level) health shield. The shield recharges when its holder has not been hit for ten seconds.
The Storm Shield was a buff granted for capturing a marked control point on the Crystal Scar. It was removed with the removal of Dominion on Patch 6.4.
Notes[]
This buff was not transferable and was simply lost upon death.
To acquire this buff, champions had to channel for three seconds onto a Greater Relic without taking any damage which would re-appear after 3 minutes.
Trivia[]
This buff can be identified by swirling blue relics around the champion who possesses it.
Before Patch 1.0.0.130, there existed that would instantly kill Karthus twice (Double Kill) if Lightning's damage was used to trigger Leona's Sunlight.
Karthus twice (Double Kill) if Lightning's damage was used to trigger 
Leona's 
Sunlight.
