Sharpness

Sharpness is one of the most straightforward rollable gear effects in Minecraft Dungeons II: it makes your attacks hit harder, full stop. It can roll as a bonus on weapons, armor, and artifacts, and comes from the gear-effect pool rather than the book-based Minecraft Dungeons II Enchanting Guide system. Melee builds of almost any flavor benefit from it, since raw damage never goes out of style.
The scaling is a clean doubling at each step: 10 at tier I, 20 at tier II, and 30 at tier III. There is no Unique tier or talisman track, so tier III from regular rolls is the ceiling — but tripling the bonus from tier I to tier III makes chasing the higher roll very worthwhile.
Gear rarity decides how many effects you can have: common gear rolls none, rare gear rolls one, and special gear rolls two. The rolled tier follows threat level — always tier I below threat 3, tier III possible from threat 6, and tier III as likely as tier II at threat 15. Stack Sharpness with fellow damage multipliers like Critical Hit Effect, Reaper, and Strength for a no-nonsense damage build.