Cull the Weak
Dash to an enemy and run them through, Culling enemies if their life is low enough. If this Attack kills at least one enemy, it grants you a Frenzy Charge, with higher Rarity monsters granting additional Charges. Enemies around you that can be Culled will be highlighted.
Good option that performs well in the right setup or as a levelling skill.
Gem Effects
Culling Strike
Normal and Magic monsters grant 1 Frenzy Charge
Rare monsters grant 2 Frenzy Charges
Unique monsters grant 3 Frenzy Charges
Requirements
How to Use Cull the Weak Effectively
Practical tips you won't find on the tooltip
Gem Level Priority
Level this gem to 20 ASAP — base damage scales significantly with gem level. Every level matters.
How to Get Cull the Weak
Use an Uncut Skill Gem to obtain Cull the Weak. These drop from enemies or can be purchased from the gem vendor once unlocked through the campaign.