He's an indispensable champion if you can get him. Its ability to compress multiple roles (protection, speed boost, break def) into a single team slot makes it useful in almost all content, from Clan Boss to Arena, Hydra and Doom Tower.
I will use it in:
Arena
Campaign (farm)
clan bosses
faction crypt
Wave Doom Tower
Hydra
Use for :
His "Utility" debuffs (Break Def, Atq, Accuracy, etc.)
Zone Break Def
ATB Control (Atb Reduction, Speed Reduction)
Support (Heal, Debuff your team, buff)
When to use the champion (Playtime):
Early
mid-game
End Game
Champion to ride 6*:
Yes
Champion you can book:
Yes priority
Book value (skills book) and number of books :
Value = 10
Number of books = 11
Book priority (random books):
A1 = Do not book
A2 = Mandatory
A3 = Mandatory
Champion you can master :
Yes
Can I feed it:
No, we never eat epic or legendary
Other information : If necessary, come to the streams to ask for information or on the discord:
Your opinion can help other players understand why this champion deserves (or not) to be mounted 6⭐. Share your experience, your strategy or your feelings: every feedback counts for the community!
A 80 % chance of placing a debuff [ATQ Reduction] 50 % and a debuff [Painful Link] for 2 rounds.
Level 2: Damage +5 %
Level 3: Damage +5 %
Level 4: Buff/Debuff chance +10 %
Level 5: Buff/Debuff chance +10 %
Damage based on :
DEF
Multiplier: 3.9*DEF
A2 = Brutal executioner | CD = 4 turns
Attacks all enemies twice.
The first strike has a 75 % chance of placing a debuff. [DEF Reduction] of 60 % for 2 turns. The second strike has a 75 % chance of placing a debuff. [VIT Reduction] of 30 % for 2 rounds.
Level 2: Damage +10 %
Level 3: Damage +10 %
Level 4: Buff/Debuff chance +10 %
Level 5: Buff/Debuff chance +15 %
Level 6: Cooldown -1
Damage based on :
DEF, MAX enemy HP
Multiplier: 1.5*DEF+0.035*Max HP Target
A3 = Servo link | CD = 5 turns
Place a buff [DEF Increase] of 60 % and a buff [SPD Increase] of 30 % on all allies for 2 turns. Also places a [Ally Protection] 50 TP27T on all allies except this Champion for 2 turns.
Level 2: Cooldown -1
Level 3: Cooldown -1
A4 = Brutal executioner | CD = 4 turns
Attacks all enemies twice.
The first strike has a 75 % chance of placing a debuff. [DEF Reduction] of 60 % for 2 turns. The second strike has a 75 % chance of placing a debuff. [VIT Reduction] of 30 % for 2 rounds.
Damage based on :
DEF, MAX enemy HP
Multiplier:
[P] Deserved tenacity
Reduces the damage received by this Champion by 10 % for each ally under buff [Ally Protection].
This Champion is immune to [Painful Link] debuffs, as well as to damage inflicted by buffs. [Reflect Damage] or passive Damage Discharge effects.
DEFENSE Aura:
Increases DEFENSE in all battles by 30
Calculate the damage of your Sydax King-killer (Sydax King-killer)
This form lets you calculate your damage. Fill in the fields to see if your champion will do more damage by adding attack or increasing critical damage.
Watch this video tutorial to optimize your damage by clicking here : Video tutorial alucare (Don't forget to subscribe, it's free!)
What to improve, PV or champion defense?
Remember to calculate the perfect optimization here:
Set of equipment that I advise you on the champion: (Finishing a set is a bonus, not an obligation)
Read below what I advise on each artifact and listen to the video to understand.
Wild, Fury, Protection, Impulse
Explanatory video in French by Alucare, ideal complement to the page.
View video
(you can use YouTube's automatic translation)
Video tutorial on how to properly stuff your champions
THANK YOU FOR READING :
Watch the whole video (best = on youtube), at the end I show how I stuff a champion myself.
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Which statistics should I look for in : Sydax King-killer
Priority of stats and sub-stats of artifacts:
Speed, Critical Rate, Critical Damage, PV%, DEF%
Weapon (Attack)
Helmet (HP)
Shield (Defense)
Gloves (Critical Damage)
Torso (PV%)
Boots (Speed)
Ring (HP)
Amulet (Critical Damage)
Banner (HP, Accuracy)
Mastery levels for Sydax King-killer
Explanatory video in French by Alucare, ideal complement to the page.
View video
(you can use YouTube's automatic translation)
Video tutorial for mastering your champions
THANK YOU FOR READING :
Watch the whole video (best = on youtube) you will understand exactly how to master your champions, you can follow the masteries on the site but try to understand why.
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Mastery for :
Dungeon, Clan Boss
Mastery for :
Arena
What you need to know about master's degrees.
We give you advice on mastery. These master's degrees will help you in 95 % of cases, but you have to try to understand why a particular choice was made. The best thing would be to understand why certain masteries have been recommended to you, so that you can modify 1 or 2 masteries in your choice according to your needs.
What grace for Sydax King-killer?
Explanatory video in French by Alucare, ideal complement to the page.
View video
(you can use YouTube's automatic translation)
Video tutorial for choosing your champion's grace
THANK YOU FOR READING :
Watch the video in its entirety (best = on youtube) and you'll understand exactly which grace to choose for your champions. You can follow the grace on the site, but try to understand why and don't use a double grace that serves no purpose!
Please subscribe, it supports me for free and put likes to the videos!
We advise you :
Crushing tear
nature's wrath
Sydax Tueur-de-roi story
Release date :
May 07, 2026
How to get Sydax Kingkiller
We can have the champion:
Ancient Shard
Sacred Shard
List of buffs and debuff of : Sydax King-killer
Team buffs list:
The buffs the champion puts on the whole team:
Ally protection 50%, +60% defense, +30% speed
The champion's debuff list:
The debuffs the champion puts on opponents:
-60% defense, -50% resistance, -30% speed, Painful link
Creator of the Alucare.fr website launched in December 2018.
Player of Raid Shadow Legends since December 29, 2019, and I became official content creator of RSL in 2020 (one of only 30 people in the world!). This allows me to provide information on the site 24 hours in advance. I cover topics where I can share my expertise to help you.
The aim is for each article to teach you something interesting!
Crushing tear 
nature's wrath 
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