Empowerment

Empowering at each level costs gold, ore, and monster drops. The gold and ore costs are scaled by +0.1x per tier of gear you are empowering. So T5 gear costs 50% more gold and ore.

Monster drops are also required for empowering.

Earlier tiers only require 1 monster drop, but starting at T6, the required items for each level are spread out across the tier.

So while Level 3 empowerment might cost 200 Unhinged Jawbone, Level 4 will cost 200 Pierced Voicebox.