Osgrun The Defiler
Last Updated: July 4, 2025
Osgrun The Defiler Overview
Bound to his back, the ancient stone pulsates with the sacred magicks of Ireth – a force powerful enough to shatter enemy defenses and leave them stunned for eternity. Osgrun the Defiler has harnessed fragments of this magic within his Obsidian Blade, and when he raises it to the skies, it’s not just a show of power – it’s a signal for his allies to strike as one.
This Dwarven warrior is a powerful support addition to the faction, bringing a strong mix of offensive utility and crowd control. His control comes from the A2, which removes all buffs from enemies, reduces their Turn Meters, and applies a Stun debuff to those pushed to 50%. It’s an excellent way to strip away enemy protections, give your team some momentum, and deliver reliable control across a range of content – from Faction Wars and Doom Tower to Arena and general wave based encounters.
This ability also works well with his passive, which causes allies to deal 20% more damage to enemies under a Stun, and automatically triggers the skill when an ally is killed. This gives your team a better chance to take down threats faster, while immediately controlling enemies to buy time for a revive.
His utility doesn’t stop there – Osgrun’s A3 is a full team ally attack skill that places a 7.5% Shatter and Increase Attack buff on all allies before the attack. If the target is killed, it also reduces the cooldown of all ally active skills by 1 turn. Shatter increases a champion’s Ignore DEF by the percentage shown, and when paired with the Increase Attack buff, it gives your team a stronger chance to take down targets. This ability can also be helpful against bosses like the Fire Knight to chip away at shield counters and push more damage through.
Lastly, his A1 increases the cooldown of a random skill on the target by 2 turns and fills ally Turn Meters by 10%. It’s a simple but effective way to add extra control while helping your team cycling through their turns faster. On top of that, he brings a strong Arena speed aura, making him a great fit for a variety of team setups.
Osgrun The Defiler Ratings
Osgrun The Defiler Skills

10/10
Book Value
Book Priority
Osgrun The Defiler 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)




Osgrun The Defiler 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)




Dungeon and Boss Blessings
Osgrun The Defiler Relics
Osgrun The Defiler Gear Recommendations
Recommended PVE Stats
SPD, HP%, DEF%, ACC
Recommended PVE Artifact Sets
Speed, Perception, Relentless, Reflex, Protection
Recommended PVP Stats
SPD, HP%, DEF%, ACC
Recommended PVP Artifact Sets
Speed, Feral, Pinpoint, Stoneskin



