
Turret
Unique Passive · Buildup
After 90 seconds, turrets gain Overgrowth. Champions can attack a turret with Overgrowth to consume the effect and deal bonus true damage based on how long the Overgrowth has built up, capped at 300 seconds of growth time.
Summoner's Rift · URF · One for All · Swiftplay · Ultimate Spellbook