What Does Breach Do in Minecraft? Mace Enchantment Guide

Breach is a mace-exclusive enchantment added in the 1.21 Tricky Trials update. Each level reduces the effectiveness of the target's armor by 15%, up to 45% at Breach IV, making heavily armored enemies — in PvP and against armored mobs — take far more damage from your hits. Against unarmored targets it does nothing, which is why it is a specialist enchantment rather than a default one.

How Breach Works

Armor in Minecraft is not a flat damage reduction. Each armor point absorbs a percentage of incoming damage, and that absorption is further shaped by the armor toughness attribute (netherite gear has higher toughness). Breach multiplies the effectiveness of the target's armor down before damage is calculated:

In practice, a full netherite-armored opponent whose armor would normally absorb around 60–65% of your damage loses roughly half of that protection at Breach IV. The perk applies on every mace hit, including smash attacks from a fall, and stacks multiplicatively with the mace's own fall-based bonus damage. That stacking is the whole reason competitive players craft a Breach mace: a smash that would deal 30 damage through armor instead lands closer to 40 once the armor's effectiveness is cut nearly in half.

Two boundaries matter:

• Breach reduces armor effectiveness, not armor points themselves — the armor bar still shows 20 points, but each point does less work.
• It has no effect on enchantment-based protections. Protection IV and its variants reduce damage through a separate mechanism, so Breach does not bypass them.

Why Breach Exists: The Mace Context

The mace, also introduced in 1.21, deals bonus damage based on the height you fall before hitting — the longer the fall, the bigger the smash. Without Breach, a huge smash attack into a well-armored player loses a large share of its damage to armor mitigation. Breach exists to keep the mace relevant against exactly the targets that would otherwise shrug it off.

Breach occupies a specific slot on the mace: it is mutually exclusive with Density and Wind Burst, the mace's other two enchantments. You must choose one of the three per mace. For how the fall-damage scaling works, see what Density does in Minecraft.

Breach vs Density vs Wind Burst

The choice follows your use case:

• PvP servers: Breach is the consensus pick, since every serious opponent wears full armor. Breach IV keeps your smash damage meaningful through netherite and Protection IV.
• PvE and mob grinding: Density usually outperforms Breach, because most hostile mobs are unarmored and Density's flat bonus per fallen block applies in full.
• Traversal and combo play: Wind Burst converts the mace into a movement tool and enables mid-air smash chains, at the cost of raw damage perks.

One way to decide: estimate your target's armor. Against a player in full Protection IV netherite, nothing you carry hits effectively without Breach — armor and its enchantments neutralize even a maximum fall smash. Against a warden or an unarmored zombie horde, Breach contributes zero and Density contributes its full value, every hit. The enchantment only pays when the enemy is wearing what it strips.

How to Get Breach

Breach is a treasure enchantment in the trial-chambers reward pool, tied to the 1.21 update content:

1. Ominous Vaults in trial chambers: the primary source. You need an Ominous Trial Key, obtained by completing an ominous trial (triggered by drinking an Ominous Bottle after defeating a raid captain). Ominous Vaults can roll Breach at any level, including IV.
2. Regular Vaults: opened with standard Trial Keys; the enchantment pool is broader and Breach appears less reliably here.
3. Mace + enchanting: since the mace cannot be enchanted at an enchanting table, vault loot is the realistic route — plan multiple ominous runs.

There is currently no librarian trade for Breach, and it does not generate in overworld structure chests. If you want a level IV copy directly, ominous vaults are the only reliable farm; duplicate lower-level Breach books cannot be combined from villager sources because none exist. An ominous trial runs like a standard trial but with tougher, equipment-wearing mobs spawned via ominous bottle effects, so bring potions, golden apples, and a backup weapon before attempting the key run.

Best Way to Use Breach

A practical Breach mace setup:

• Breach IV (from an ominous vault)
• Unbreaking III + Mending for durability — both are compatible with Breach
• A Wind Burst mace as a second weapon if you also want smash mobility, since the two cannot coexist on one mace

In a duel, the flow is simple: land a smash from height with the Breach mace to punch through armor, then finish with a sword. Because Breach only helps against armor, swap off the mace when the target drops below a few armor points or when fighting unarmored mobs — a Sharpness-enchanted sword deals more consistent damage in those moments. For the general system behind applying and combining enchantments, see our full enchanting guide.

Against armored mobs that do exist naturally — vindicators in raids carry no armor, but on higher-difficulty regional settings some raid mobs spawn with equipment, and players on servers frequently wear full gear — Breach turns the mace from a gimmick into the answer. If your server's meta is "everyone in netherite," a Breach IV mace with Wind Burst on a backup weapon covers both damage and mobility needs.

Breach in Practice: A Duel Walkthrough

A concrete sequence shows where the enchantment earns its slot:

1. Approach with height. Take a staircase, tower, or ender-pearl toss to get at least 5 blocks above your opponent — the smash bonus still applies with Breach equipped.
2. Land the first smash. A Breach IV smash into full netherite hits for noticeably more than the same smash without Breach, because the armor's percentage reduction is computed on a smaller effective value.
3. Follow with melee. After the smash, Breach keeps applying on every ground hit, so staying on the mace is often correct while the opponent still wears full armor.
4. Swap when armor breaks. Armor durability drops as you hit; once pieces start breaking, a Sharpness sword overtakes the mace in sustained damage.

Against unarmored opponents the sequence inverts: skip the mace entirely and open with the sword, because step 2 gains nothing from Breach. Knowing which phase you are in — armored target or not — is the entire skill of using this enchantment well.

What Counts as "Armor Effectiveness"?

A quick refresher keeps the numbers meaningful. Each armor point normally reduces incoming damage by up to 4% (8% for the strongest gear against big hits), with armor toughness softening the reduction for netherite. In total, a full netherite set absorbs a large majority of ordinary melee damage before Protection IV adds its separate percentage on top. Breach attacks the first layer only: at Breach IV the first layer works at 45% strength, so your raw damage passes through far more often — while Protection IV's separate reduction still applies afterward.

This is also why Breach pairs conceptually with the mace's huge raw numbers. Weapons with small base damage barely notice armor penetration; the mace's smash damage is large enough that a percentage swing in armor effectiveness converts into dozens of real damage points per hit.

Things to Watch Out For

• Dead perk in PvE: most hostile mobs (zombies, skeletons, creepers) spawn with zero armor, so Breach contributes nothing in ordinary survival combat. A few exceptions — armored zombies from commands or rare natural spawns, and piglin brutes with some equipment — do benefit.
• Mutual exclusivity is permanent in practice: removing Breach with a grindstone wipes all mace enchantments, so commit to a build before investing levels.
• Java vs Bedrock: the mace, Breach, Density, and Wind Burst shipped to both editions with 1.21; numeric behavior of armor effectiveness reduction is consistent across editions.