Raid Shadow Legends Increase Debuff Duration Skill allows a Champion to increase 1 or more debuffs duration on their enemy Champions. This allows the debuff to provide their disadvantages to the enemy Champion longer to decrease their survivability and efficiency in battle.
Increase Debuff Duration FAQ
Which debuff is unable to have its duration extended?
Stun, Sleep, Freeze, Provoke, Fear, True Fear, Petrification, Sheep, and Smite (from Brimstone Blessing) are not affected by Increase Debuff Duration effects. This restriction aims to prevent a champion from being completely locked out of the battlefield, as that could lead to unfairness in the game.
Increase Debuff Duration Champions (22)
Increase Debuff Duration (AoE)
Mythical
Legendary
- Brewguard Jeroboam (OT-LDF)
- Corvis the Corruptor (SO-LDM)
- Supreme Kael (DE-LAV)
- Vizug the Noxious (OT-LHM)
Epic
Rare
Uncommon
Common
Increase Debuff Duration (Random)
Mythical
Legendary
Epic
Rare
Uncommon
Common
Increase Debuff Duration (Target)
Mythical
Legendary
- Alsgor Crimsonhorn (BA-LHF)
- Crohnam (BA-LAM)
- Gwyndolin The Silent (SW-LAF)
- Jingwon (SK-LHV)
- Shemnath (KR-LAM)
- Valkanen (UH-LAV)
Epic
Rare
Uncommon
Common
All Increase Debuff Duration Champions (15)
All Increase Debuff Duration (AoE)
Mythical
Legendary
Epic
- Chani (SK-EAM)
- Dark Kael (DE-EAM)
- Erinyes (DS-EAF)
- Flesh-Tearer (SW-ESM)
- Haarken Greatblade (BA-EAV)
- Thylessia (KR-EAF)
- Vildrax (DS-ESM)
Rare
Uncommon
Common
All Increase Debuff Duration (Target)
Mythical
Legendary
Epic
Rare
Uncommon
Common
HpBurn Increase Debuff Duration Champions (2)
HpBurn Increase Debuff Duration (AoE)
Mythical
Legendary
Epic
Rare
Uncommon
Common
HpBurn Increase Debuff Duration (Target)
Mythical
Legendary
Epic
Rare
Uncommon
Common
Passive Increase Debuff Duration Champions (1)
Passive Increase Debuff Duration (Target)
Mythical
Legendary
Epic
Rare
Uncommon
Common
Special Increase Debuff Duration Champions (1)
Special Increase Debuff Duration (Passive)
Mythical
Legendary
Epic
Rare
Uncommon
Common
Specific Increase Debuff Duration Champions (12)
Specific Increase Debuff Duration (AoE)
Mythical
Legendary
Epic
Rare
Uncommon
Common
Specific Increase Debuff Duration (Target)
Mythical
Legendary
- Gronjarr (DW-LHF)
- Kalvalax (KR-LAS)
- Lydia the Deathsiren (DE-LSV)
- Searsha the Charred (SY-LSF)
- Sicia Flametongue (DS-LAF)
- Supreme Galek (OR-LAV)
Missing Loki.
His A1 has an increase debuf duration and is and AOE to boost
Aeshma is an epic Knight R. that can also increase debuff EOE.
Why isn’t Corvis on the list? His A2 is an AOE 2-hit where the first hit increases the duration of enemy debuffs and the second increases the duration of ally buffs, 1 turn each.
Missing Jingwon (https://ayumilove.net/raid-shadow-legends-jingwon-skill-mastery-equip-guide/) and PS your skill description on his page is also out of date.
Should be:
Attacks 1 enemy. Has a 75% chance of increasing the duration of all debuffs on the target by 1 turn. Also places a [Block Active Skills] debuff for 3 turns if the target is under a [Decrease ACC] debuff or [Decrease C. DMG] debuff.
Level 2: Buff/Debuff Chance +10%
Level 3: Buff/Debuff Chance +15%
Level 4: Cooldown -1
Level 5: Cooldown -1
Magnarr A3 Increases HP burns
@Robert Sparrock: I have included Dark Kael into the AoE Increase Debuff Duration. Thanks!
Dark Kael, A2 also has AOE increase Debuff Duration
@Dylan Wightman: Assassin is added to the Increase Debuff Duration skill list!
Assassin, the new shadow kin rare. Seems like a budget Erinyes
@Drauku: Narma the Returned has been added to the Increase Debuff Duration champion list!
@Cecil: Lydia the Deathsiren increases the Poison Sensitivity debuff duration on her A1 skill.
Lydia being on this list doesn’t make sense. She doesn’t have a increase debuff skill.
‘Narma the Returned’ should be added to this list.
A1: Hell Crescent [ATK]
Attacks 1 enemy. Has a 40% chance of increasing the duration of 3 random debuffs on the target by 1 turn.
You can tell if a skill requires accuracy to land if you occasionally see “resisted” when attempting to land it. Also in this case where where the debuff does not land and there is no “resisted” text means the skill percentage check was not successful. Thus in the case of this Warlord skill he does indeed need accuracy to get it to work.
Do debuff extenders need accuracy or is it based on the listed percentage only?
@Paul: I have updated the title. Thanks for highlighting it!
FYI – the title on the page says “RESET SKILL COOLDOWN CHAMPIONS” but it champions with the increase debuff skill
I have used Septimus and/ Bulwark in the Clan Boss with Zavia and have seen the Poison debuff increase every time when his skill lands. I have also used it with HP Burn, Weaken, Decrease Attack, and Decrease Defense. All of these debuffs had their count increase. I have done this many times in CB for the past month.
I took Aothar for poison and Flesh-Tearer for increasing debuff. And he ist on ascend level 3, so his A3 is in superior level.
@Smartboz: What are the champions did you use to test this out?
I tested it myself right now: Poison is not affected as well by increase debuff duration. Tested it multiple times, and there was no notice, that the opponent resisted.
@Blue Overnight: Based from what I heard from the moderator on the RAID Shadow Legends Official Discord, they mentioned that Sniper does not affect Debuff Extender. Some players who have Septimus (Legendary Champion) tested that he does not extend the debuff with Sniper but through Warmaster (additional attack) from Offense Tier 6 Mastery.
Can you confirm if the sniper masterie works on Debuff extentenders?
@NotProtagonist: Sandlashed Survivor Increase Buff Duration of all allies and Decreases Buff Duration of all enemies. She does not Increase Debuff duration of all enemies.
Need to add sandlashed survivor
@yivgeni: Yes, Increase Debuff Duration works on all debuffs except for Crowd Control types such as Stun, Provoke, Sleep and Freeze.
does this work on poison?
I can confirm that Master Hexer works on Septimus, increasing debuffs for 2 turn. However, he has a passive to grant this effect, while Warlord and Vizier have such effect built in their skills.
Does anyone know if sniper or master hexer affect this ability?
@Mick: It can be resisted if your champion’s accuracy is lower than the enemy champion’s resist.
As it is not applying debuff, is it countered by resist? Thanks
@lotusmonk: Thanks for your input! I have added Septimus and Bulwark into the Increase Debuff Duration list.
Missing Bulwark and septimus