Instant effect

Increase Debuff Duration

Increase Debuff Duration is the game's own name for this effect on the battle screen. The game gives no separate description for it.

Champions with it

61 champions have a skill with a Increase Debuff Duration effect, according to the effect lines in the game data. This lists who has it and on which skill, not how strong it is or how often it happens: values and chances are on each champion's page.

• Aeshma Languish
• Akemtum Immortal Malison
• Alsgor Crimsonhorn Thunderous Maul
• Aox the Rememberer Steward of Time [P]
• Aphidus the Hivelord Umbral Stingers
• Artak Chaosrazor
• Ash’nar Dragonsoul Ignition Arc; Magma Geyser
• Assassin Lingering Death
• Bombardier Bombard
• Brewguard Jeroboam Last Orders (all enemies)
• Bulwark Punishing Defenses [P]
• Chani Shower of Misery
• Corvis the Corruptor Medical Miracle
• Crohnam Djinn Swords
• Dark Kael Binding Darkness
• Embrys the Anomaly Fetid Glaive
• Enda Moonbeam Glimmer
• Erinyes Almighty Curse
• Flesh-Tearer Lay Low
• Folan Silverhart Puncture Wounds
• Gizmak the Terrible Flames of Resentment (all enemies); Magma Hurl; Totemic Vengeance
• Gnishak Verminlord Verminlord's Command
• Gronjarr Pyro Pummel
• Gwyndolin the Silent Talonrake
• Jingwon Compound Calamity
• Kalvalax Oozing Greatsword
• Kosk of Two Skins Envenomed Sickles
• Lady Mikage Silkensnare
• Liburga Irradiate [P]
• Loki the Deceiver Flames of Mischief
• Lumberer Gigantic Pulverizers
• Lydia the Deathsiren Unnamed skill; Oppression
• Magnarr Fan the Flames (all enemies)
• Narma the Returned Hell Crescent
• Night Queen Krixia Swordspear Slash
• Searsha the Charred Conflagrate
• Selinia Nightcloak Moonshot (all enemies)
• Septimus Giant Killer [P]
• Shemnath Caryatid's Curse
• Sicia Flametongue Towering Inferno
• Siegfrund the Nephilim Excoriating Edge
• Skeletor Havoc Scythe
• Soulless Reign of Terror; Reign of Terror (all enemies)
• Stokk the Broken Doom Flasks
• Stout Axeman Thrives on Danger [P]
• Supreme Galek Exemplar of Rage
• Supreme Kael Putrescence (all enemies)
• Teela Goremane Life Worm
• Teodor the Savant Chymistry (all enemies)
• Theimios the Everdrinker Life Of The Party [P]
• Theresc Dual Debility
• Thylessia Shrieking Voices
• Toshiro the Bloody Iai Cut
• Tunnel Steward Intensify
• Urticata Mephitic Spines
• Valkanen Dread Scythe
• Vildrax Swarm of Horrors
• Vizier Ovelis Accursed Blades
• Vizug the Noxious Despoiler of Anhelt (all enemies)
• Vogoth Horrendous Strength
• Warlord Bludgeon

Taken from the game data and not tested in battle here. See Data quality.