Density

Density is an uncommon special enchantment in Minecraft. Density supercharges the mace's signature falling smash, adding extra damage for every block you have dropped before the blow connects.

Its opening level already delivers a noticeable boost (+0.5 extra damage per block fallen), and it climbs from there to a maximum of level 5 (V) on your mace.

Density tops out at level 5, shown as V on the mace, and the gap between the levels is where the enchantment's character really lives.

Each of its five levels adds 0.5 extra damage per block fallen, so Density V adds 2.5 damage for each block of your fall on top of the mace's already brutal base smash. The further you fall, the more the bonus compounds, which is what makes high-altitude mace attacks so devastating.

Density fits exactly one item (the mace), and nothing else will accept it, so it is a dedicated mace enchantment through and through.

Density cannot share a mace with Sharpness, Smite, Bane of Arthropods and Breach. All of these sit in the same mutually-exclusive group as Density, so a mace can wear only one of them at once and you choose which playstyle to commit to.

Density can be rolled directly at an enchanting table, where the level you pay and the enchantability of a mace together decide which level of it you can be offered, up to V. Should the table prove stingy with Density, you can instead source the book from loot chest and villager trading and anvil it on.

Its selection weight of 5 makes Density an uncommon roll: it appears with middling frequency when enchanting a mace: common enough to plan around, but not guaranteed on any given roll.