Diablo IV: How to Get Blood Moon Breeches – Best Farm Routes

The fast answer

Blood Moon Breeches are Necromancer-only Unique pants built around curses and minions. There is no quest and no guaranteed unlock — they sit in the general Unique loot pool at high difficulty, which means the fastest route is volume farming at a Torment tier you can clear quickly, with Uber boss runs as your targeted lane on top.

• Best targeted farm: Uber and Tormented Duriel and Andariel. Tormented variants have improved Unique drop rates.
• Strong second lane: Astaroth at the end of Escalating Nightmares — several guides call this the most reliable single source.
• Not Uber-locked: unlike true Uber-exclusive items, these also drop from ordinary high-tier content — Nightmare Dungeons, Helltides, Legion events, World Bosses.
• Craft route: the Horadric Cube “Upgrade to Unique” recipe on a normal pants base can produce them, but it rolls randomly within the Necromancer pants pool. It is not a target craft.
• French name: Jambières de la lune de sang — same item.

Current as of Season 14 (started 30 June 2026) on build 3.1.1a.

What the item does

Blood Moon Breeches were reworked in patch 1.5.0 to lean hard into curse-and-minion Necromancer play. The identity is straightforward: your minions apply your curses for you, and cursed enemies take dramatically more damage.

The current effect, as documented across item databases:

• Your Minions gain a chance on hit (roughly 3–7%) to randomly inflict Decrepify or Iron Maiden
• Enemies afflicted by your curses take substantially increased damage from you, with a strong Overpower component
• Inherent affixes: bonus Overpower Damage, increased Curse Duration, Maximum Life, and +ranks to Curse Skills

A note on the numbers. Sources genuinely disagree here. English guides currently describe roughly +100–150% damage against cursed enemies; other-language databases describe it as 50–60% increased critical strike damage against cursed targets, and a separate entry lists 70% more Overpower damage. These almost certainly reflect different patch revisions or roll bands. Affix ranges also shift with Item Power. Trust your in-game tooltip over any guide, including this one. The mechanics above are stable; the percentages are not.

Same caution on the level requirement: the only explicitly sourced figure is a required level of 60 from a community database. Guides otherwise just place it in level 60+ content at high World Tier and Torment difficulty. If you see a precise Item Power bracket quoted somewhere, it is extrapolated from roll ranges rather than published by Blizzard.

One thing that is not in dispute: this is a standard Unique, not a Mythic. Boosting sites that market it as “mythic-tier” and usable by multiple classes are wrong on both counts.

How to farm it

1. Treat it as a volume problem

Ancestral Uniques only appear in high-tier endgame content, so get to Torment difficulty first. But the more important point is pacing: kill speed beats tier. Ten clean runs at a Torment you finish fast will out-produce three grinding runs at a higher tier where half your time goes to kiting elites. If a difficulty makes you slow, you are farming worse, not better.

2. Run Duriel and Andariel as your named targets

If you want one lane to structure a session around, it is Uber Duriel and Uber Andariel in Torment. Both are documented sources, and the Tormented versions carry improved Unique drop rates.

The efficient pattern is to bank summoning materials, then spend them in a block of repeated kills, rather than summoning once between other chores. Boss echoes convert your time into concentrated rolls from a narrowed pool instead of hoping a random chest hits right. Our Heir of Perdition craft route uses the same material loop, so you can chase both in one session.

3. Add Escalating Nightmares for Astaroth

This is the lane most older guides miss. Progressing Escalating Nightmares — the Escalation seals across three dungeons — ends at Astaroth, and multiple guides call this the safest or most likely route to Blood Moon Breeches specifically. There is no minimum difficulty requirement, but the drop chance scales with Nightmare level, so push the tier as high as you can still clear cleanly.

Lord Zir and Envoy of Hatred are also documented sources if you have materials spare.

4. Try the Horadric Cube, with realistic expectations

The “Upgrade to Unique” recipe takes a common pants base plus crafting dust and outputs a random Unique pants of that type — Blood Moon Breeches included in the Necromancer pool. It is not a targeted craft. Every attempt is an RNG roll within the category. Worth burning spare materials on; not worth building a plan around.

5. Fill dead time with density

When you have no boss materials and no dust, switch to whatever generates the most item rolls per minute: Helltides (many chest opens plus material income in one loop), Nightmare Dungeons if you clear layouts fast, and Legion events or World Bosses when timers line up. Obol gambling on pants at the Purveyor of Curiosities is a legitimate side lane but a poor main plan.

A session route that wastes the least time

1. Open with whatever high-density activity is live — a Helltide or a fast Nightmare Dungeon chain.
2. Prioritise picking up summoning materials for Duriel and Andariel over tunnelling random elites.
3. Slot World Bosses and Legion events in only when their timers align. Never idle in town waiting.
4. Push Escalating Nightmare seals in parallel — they progress toward Astaroth while you farm everything else.
5. Once materials are banked, spend them in one concentrated block of boss runs.
6. Dump spare dust into Cube pants rolls and leftover Obols at the end of the session.

This keeps general Unique rolls generating continuously while you build toward the targeted lanes, which beats grinding a single dungeon for hours.

Should you actually equip them?

Not automatically. These pants cost you a customisable pants slot, so they have to earn it.

They are strong when your Necromancer already runs a full minion package — Skeletal Warriors, Mages and a Golem — wants curses up permanently, and scales off Curse ranks and Overpower. In that build the pants replace manual curse casting and keep uptime high without spending globes of attention on it.

They are weak on direct-cast or sacrifice builds. With few or no minions, the curse proc barely fires and you have traded a strong customisable roll for a passive that does nothing. If you run a caster-leaning Necromancer, our Frost Lich Necromancer build is a better home for that slot.

Common mistakes

• Farming above your clear speed. Rare Unique hunting is already frustrating; slow runs make the variance feel far worse than it is.
• Assuming it is Uber-exclusive. It is not. Ignoring general high-tier content because you think only Duriel drops it costs you rolls.
• Expecting a guaranteed Cube craft. “Upgrade to Unique” rolls the whole Necromancer pants pool. Budget materials accordingly.
• Equipping it on the wrong build. Without an active minion package the effect is close to dead weight.
• Trusting a guide’s exact percentages. Including ours. The ranges have shifted across patches and vary with Item Power — read the tooltip.

More item routes and current-patch testing sit on the Diablo IV hub, and if you are also chasing Mythics this season, our 3.1.1 Mythic drop rate test is worth reading before you spend Sparks.

FAQ

Which class can use Blood Moon Breeches?

Necromancer only. It is a class-restricted Unique pants, not a general drop.

Is it a Mythic Unique?

No. It is a standard Unique. Sites describing it as Mythic-tier or multi-class are incorrect.

What’s the single best farm?

Tormented Duriel and Andariel for targeted runs, with Astaroth via Escalating Nightmares as an equally strong second lane. Fill the gaps with high-density Torment content, since the item is also in the general pool.

Can I target-craft it in the Horadric Cube?

No. “Upgrade to Unique” produces a random Unique from the Necromancer pants pool. It improves your odds per attempt but never guarantees this specific item.

What level do I need?

The only sourced figure is level 60. In practice you want to be in Torment-tier endgame content, which is well past that.