Thundering Berserkir Axes

Carnage spreads around you when you wield these axes, such that Thor himself would be proud.
Overview
Thundering Berserkir axes are an enchanted version of the 
The weapon has a 25% chance to deal Lightning damage on a hit, and a separate 25% chance to trigger Chain Lightning, which deals 75 additional Lightning damage. After Chain Lightning is triggered, it has an 80% chance to jump to nearby enemies, making the weapon especially strong against grouped foes. Larger packs of enemies take more total damage from the chained strikes and tend to die faster than small isolated targets.
Crafting and upgrading require Berserkir axes, 

- Quality 1: 140 Slash, 10 Lightning, 175 Durability
- Quality 2: 145 Slash, 10 Lightning, 225 Durability
- Quality 3: 150 Slash, 10 Lightning, 275 Durability
- Quality 4: 155 Slash, 10 Lightning, 325 Durability
Upgrade costs are:
- Quality 1: 1 Berserkir axes, 5 Flametal, 1 Iolite
- Quality 2: 5 Flametal, 1 Iolite
- Quality 3: 10 Flametal, 2 Iolite
- Quality 4: 15 Flametal, 3 Iolite
When chopping trees, Thundering Berserkir axes do not deal Lightning damage to the tree itself through either normal hits or Chain Lightning. However, the Chain Lightning effect can still activate while cutting wood and strike nearby enemies, so they remain useful in mixed combat situations where enemies are fighting around trees or other obstacles.
Official description
Carnage spreads around you when you wield these axes, such that Thor himself would be proud.