Sydax King Killer
Last Updated: May 4, 2026
Sydax King Killer Overview
This is an initial review of Sydax King Killer, and ratings are subject to change following further playtesting.
Sydax is a defensive support damage hybrid who brings Ally Protection, strong team buffs, and Enemy MAX HP AoE damage, making him a solid option for survivability and boss damage in Hydra and PvE progression.
Sydax King Killer is a feared warrior of the Dark Elves, sent to deal with any intruders who dare step into their lair. If no worthy reason is given for their presence, Sydax does what he does best… eliminates them without hesitation. In doing so, he absorbs fragments of their souls, growing stronger with each kill, shaping him into a master of protection, support, and pain.
The protection aspect of his kit comes from his A3, placing Increase DEF, Increase SPD, and Ally Protection on all allies. This enhances DEF based damage dealers, improves your team’s ability to withstand incoming damage, and helps them outpace enemies. Sydax also brings utility through his A1, placing Decrease ATK and Pain Link to further reduce incoming damage while adding additional damage output.
His A2 is where his damage comes from, a double-hitting AoE attack that scales from both DEF and enemy MAX HP, while also placing Decrease DEF and Decrease SPD. This combination not only enhances your damage but also helps slow enemies like Hydra. While traditional damage dealers can outscale Enemy MAX HP champions in most cases due to the 10% or 5% caps on bosses, this scaling still remains one of the most effective ways to speed up dungeon runs and deal strong damage against many PvE bosses.
Sydax King Killer Skills

10/10
Book Value
Book Priority
Sydax King Killer PVE Masteries




![Shield Breaker - Increases damage inflicted to targets under [Shield], buffs by 25% shield-breaker](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/shield-breaker.png)








![Opportunist - Increases damage inflicted to targets with [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuffs by 12%. opportunist](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/opportunist.png)


![Blood Shield - Places a [Shield], buff on this Champion for 1 turn when this Champion kills an enemy. The value of the [Shield], is equal to 15% of this Champion's MAX HP. Occurs once per turn blood-shield](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/blood-shield.png)








![Rejuvenation - Increases the amount of healing and the value of [Shield], buffs this Champion receives by 5% rejuvenation](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/rejuvenation.png)
![Mighty Endurance - Decreases the damage received by 10% if this Champion has [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuffs. might-endurance](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/might-endurance.png)




![Wisdom of Battle - Has a 30% chance of placing a [Block Debuffs], buff on this Champion for 1 turn when [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuffs expire on this Champion. wisdom-of-battle](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/wisdom-of-battle.png)


![Harvest Despair - Has a 60% chance of placing a [Leech], debuff for 1 turn when placing [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuffs. harvest-despair](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/harvest-despair.png)




![Deterrence - Has a 20% chance to counterattack an enemy when they apply a [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuff on an ally. Cooldown: 1 turn deterrence](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/deterrence.png)


![Fearsome Presence - Increases the chances of placing a [Stun], [Sleep], [Freeze], [Fear], [True Fear], [Provoke], or [Sheep], debuff from Skills or Artifacts by 5% fearsome-presence](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/fearsome-presence.png)




![Shieldbearer - Increases the value of [Shield], buffs this Champion casts by 5% shieldbearer](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/shieldbearer.png)


![Healing Savior - Increases the amount of healing and the value of [Shield], buffs placed by this Champion by 10% if the target ally has 40% HP or less healing-savior](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/healing-savior.png)



![Merciful Aid - Increases the amount of healing and the value of [Shield], buffs placed by this Champion by 15% if the target ally has [Stun], [Sleep], [Fear], [True Fear], or [Freeze] debuffs merciful-aid](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/merciful-aid.png)



![Lasting Gifts - Has a 30% chance to extend the duration of any buff cast by this Champion by 1 turn.
It will not extend [Block Damage], [Unkillable], or [Revive on Death], buffs. lasting-gifts](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/lasting-gifts.png)

![Sniper - Increases the chances of placing any debuff from Skills or Artifacts by 5%.
It will not increase the chances of placing [Stun], [Sleep], [Freeze], [Fear], [True Fear], [Provoke], or [Petrification], debuffs. sniper](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/sniper.png)
![Master Hexer - Has a 30% chance to extend the duration of any debuff cast by this Champion by 1 turn. It will not extend [Stun], [Sleep], [Freeze], [Provoke], [Fear], [True Fear], [Bomb], or [Petrification], debuffs. master-hexer](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/master-hexer.png)








![Shield Breaker - Increases damage inflicted to targets under [Shield], buffs by 25% shield-breaker](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/shield-breaker.png)








![Opportunist - Increases damage inflicted to targets with [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuffs by 12%. opportunist](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/opportunist.png)


![Blood Shield - Places a [Shield], buff on this Champion for 1 turn when this Champion kills an enemy. The value of the [Shield], is equal to 15% of this Champion's MAX HP. Occurs once per turn blood-shield](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/blood-shield.png)








![Rejuvenation - Increases the amount of healing and the value of [Shield], buffs this Champion receives by 5% rejuvenation](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/rejuvenation.png)
![Mighty Endurance - Decreases the damage received by 10% if this Champion has [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuffs. might-endurance](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/might-endurance.png)




![Wisdom of Battle - Has a 30% chance of placing a [Block Debuffs], buff on this Champion for 1 turn when [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuffs expire on this Champion. wisdom-of-battle](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/wisdom-of-battle.png)


![Harvest Despair - Has a 60% chance of placing a [Leech], debuff for 1 turn when placing [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuffs. harvest-despair](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/harvest-despair.png)




![Deterrence - Has a 20% chance to counterattack an enemy when they apply a [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuff on an ally. Cooldown: 1 turn deterrence](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/deterrence.png)


![Fearsome Presence - Increases the chances of placing a [Stun], [Sleep], [Freeze], [Fear], [True Fear], [Provoke], or [Sheep], debuff from Skills or Artifacts by 5% fearsome-presence](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/fearsome-presence.png)




![Shieldbearer - Increases the value of [Shield], buffs this Champion casts by 5% shieldbearer](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/shieldbearer.png)


![Healing Savior - Increases the amount of healing and the value of [Shield], buffs placed by this Champion by 10% if the target ally has 40% HP or less healing-savior](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/healing-savior.png)



![Merciful Aid - Increases the amount of healing and the value of [Shield], buffs placed by this Champion by 15% if the target ally has [Stun], [Sleep], [Fear], [True Fear], or [Freeze] debuffs merciful-aid](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/merciful-aid.png)



![Lasting Gifts - Has a 30% chance to extend the duration of any buff cast by this Champion by 1 turn.
It will not extend [Block Damage], [Unkillable], or [Revive on Death], buffs. lasting-gifts](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/lasting-gifts.png)

![Sniper - Increases the chances of placing any debuff from Skills or Artifacts by 5%.
It will not increase the chances of placing [Stun], [Sleep], [Freeze], [Fear], [True Fear], [Provoke], or [Petrification], debuffs. sniper](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/sniper.png)
![Master Hexer - Has a 30% chance to extend the duration of any debuff cast by this Champion by 1 turn. It will not extend [Stun], [Sleep], [Freeze], [Provoke], [Fear], [True Fear], [Bomb], or [Petrification], debuffs. master-hexer](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/master-hexer.png)




Sydax King Killer PVP Masteries




![Shield Breaker - Increases damage inflicted to targets under [Shield], buffs by 25% shield-breaker](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/shield-breaker.png)








![Opportunist - Increases damage inflicted to targets with [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuffs by 12%. opportunist](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/opportunist.png)


![Blood Shield - Places a [Shield], buff on this Champion for 1 turn when this Champion kills an enemy. The value of the [Shield], is equal to 15% of this Champion's MAX HP. Occurs once per turn blood-shield](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/blood-shield.png)








![Rejuvenation - Increases the amount of healing and the value of [Shield], buffs this Champion receives by 5% rejuvenation](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/rejuvenation.png)
![Mighty Endurance - Decreases the damage received by 10% if this Champion has [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuffs. might-endurance](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/might-endurance.png)




![Wisdom of Battle - Has a 30% chance of placing a [Block Debuffs], buff on this Champion for 1 turn when [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuffs expire on this Champion. wisdom-of-battle](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/wisdom-of-battle.png)


![Harvest Despair - Has a 60% chance of placing a [Leech], debuff for 1 turn when placing [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuffs. harvest-despair](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/harvest-despair.png)




![Deterrence - Has a 20% chance to counterattack an enemy when they apply a [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuff on an ally. Cooldown: 1 turn deterrence](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/deterrence.png)


![Fearsome Presence - Increases the chances of placing a [Stun], [Sleep], [Freeze], [Fear], [True Fear], [Provoke], or [Sheep], debuff from Skills or Artifacts by 5% fearsome-presence](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/fearsome-presence.png)




![Shieldbearer - Increases the value of [Shield], buffs this Champion casts by 5% shieldbearer](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/shieldbearer.png)


![Healing Savior - Increases the amount of healing and the value of [Shield], buffs placed by this Champion by 10% if the target ally has 40% HP or less healing-savior](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/healing-savior.png)



![Merciful Aid - Increases the amount of healing and the value of [Shield], buffs placed by this Champion by 15% if the target ally has [Stun], [Sleep], [Fear], [True Fear], or [Freeze] debuffs merciful-aid](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/merciful-aid.png)



![Lasting Gifts - Has a 30% chance to extend the duration of any buff cast by this Champion by 1 turn.
It will not extend [Block Damage], [Unkillable], or [Revive on Death], buffs. lasting-gifts](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/lasting-gifts.png)

![Sniper - Increases the chances of placing any debuff from Skills or Artifacts by 5%.
It will not increase the chances of placing [Stun], [Sleep], [Freeze], [Fear], [True Fear], [Provoke], or [Petrification], debuffs. sniper](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/sniper.png)
![Master Hexer - Has a 30% chance to extend the duration of any debuff cast by this Champion by 1 turn. It will not extend [Stun], [Sleep], [Freeze], [Provoke], [Fear], [True Fear], [Bomb], or [Petrification], debuffs. master-hexer](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/master-hexer.png)








![Shield Breaker - Increases damage inflicted to targets under [Shield], buffs by 25% shield-breaker](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/shield-breaker.png)








![Opportunist - Increases damage inflicted to targets with [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuffs by 12%. opportunist](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/opportunist.png)


![Blood Shield - Places a [Shield], buff on this Champion for 1 turn when this Champion kills an enemy. The value of the [Shield], is equal to 15% of this Champion's MAX HP. Occurs once per turn blood-shield](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/blood-shield.png)








![Rejuvenation - Increases the amount of healing and the value of [Shield], buffs this Champion receives by 5% rejuvenation](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/rejuvenation.png)
![Mighty Endurance - Decreases the damage received by 10% if this Champion has [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuffs. might-endurance](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/might-endurance.png)




![Wisdom of Battle - Has a 30% chance of placing a [Block Debuffs], buff on this Champion for 1 turn when [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuffs expire on this Champion. wisdom-of-battle](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/wisdom-of-battle.png)


![Harvest Despair - Has a 60% chance of placing a [Leech], debuff for 1 turn when placing [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuffs. harvest-despair](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/harvest-despair.png)




![Deterrence - Has a 20% chance to counterattack an enemy when they apply a [Stun], [Sleep], [Fear], [True Fear], [Freeze], [Petrification], debuff on an ally. Cooldown: 1 turn deterrence](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/deterrence.png)


![Fearsome Presence - Increases the chances of placing a [Stun], [Sleep], [Freeze], [Fear], [True Fear], [Provoke], or [Sheep], debuff from Skills or Artifacts by 5% fearsome-presence](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/fearsome-presence.png)




![Shieldbearer - Increases the value of [Shield], buffs this Champion casts by 5% shieldbearer](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/shieldbearer.png)


![Healing Savior - Increases the amount of healing and the value of [Shield], buffs placed by this Champion by 10% if the target ally has 40% HP or less healing-savior](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/healing-savior.png)



![Merciful Aid - Increases the amount of healing and the value of [Shield], buffs placed by this Champion by 15% if the target ally has [Stun], [Sleep], [Fear], [True Fear], or [Freeze] debuffs merciful-aid](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/merciful-aid.png)



![Lasting Gifts - Has a 30% chance to extend the duration of any buff cast by this Champion by 1 turn.
It will not extend [Block Damage], [Unkillable], or [Revive on Death], buffs. lasting-gifts](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/lasting-gifts.png)

![Sniper - Increases the chances of placing any debuff from Skills or Artifacts by 5%.
It will not increase the chances of placing [Stun], [Sleep], [Freeze], [Fear], [True Fear], [Provoke], or [Petrification], debuffs. sniper](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/sniper.png)
![Master Hexer - Has a 30% chance to extend the duration of any debuff cast by this Champion by 1 turn. It will not extend [Stun], [Sleep], [Freeze], [Provoke], [Fear], [True Fear], [Bomb], or [Petrification], debuffs. master-hexer](https://hellhades.com/wp-content/plugins/rsl-assets/assets/masteries/master-hexer.png)




Dungeon and Boss Blessings
Sydax King Killer Relics
Sydax King Killer Gear Recommendations
Recommended PVE Stats
DEF%, HP%, C.RATE, C.DMG, SPD
Recommended PVE Artifact Sets
Protection, Savage/Lethal, Merciless, Impulse, Feral
Recommended PVP Stats
DEF%, HP%, C.RATE, C.DMG, SPD
Recommended PVP Artifact Sets
Protection, Savage/Lethal, Merciless, Stoneskin, Mercurial



