How to Build a Wither Skeleton Farm (Skulls for Beacons)

Every beacon needs a Nether star, every Nether star needs a Wither, and every Wither needs three wither skeleton skulls. Skulls are a rare drop, so hunting them by hand is slow and dangerous. A farm turns three skulls from an expedition into an afternoon.

Where wither skeletons spawn

Wither skeletons spawn only inside Nether fortresses, in the dark, on any solid block within the fortress's defined bounding box. That box extends beyond the visible walkways, which is both a complication and an opportunity: you can build spawning platforms in open air near a fortress and still be inside the spawn region.

They drop coal, bones, stone swords, and — rarely — a wither skeleton skull.

Skulls are genuinely rare

The skull drop rate is low. Looting III meaningfully improves it, and it is the single most valuable thing you can bring. If you do not have Looting III yet, our enchanting setup guide covers reaching level 30 reliably, and the villager jobs guide covers buying the book from a Librarian.

Expect to kill a great many wither skeletons for three skulls. That is exactly why the farm is worth building rather than hunting manually.

The wither effect

Wither skeletons inflict Wither on hit, which damages you over time and, unlike poison, can kill you. Two defences:

• Milk removes it instantly. Bring several buckets.
• Distance. They are tall and have reach, so a farm design where you strike through a gap they cannot cross is far safer than open melee.

They are also immune to fire, so lava and fire-based kill methods do not work on them at all. This rules out the lava blade that works well on other farms.

The design

Because water cannot be placed in the Nether and wither skeletons are fire-immune, the design relies on gravity and manual killing:

1. 1.Find a fortress and establish where its bounding box extends.
2. 2.Build spawning platforms inside that box — flat, dark, with 3 blocks of headroom. Wither skeletons are tall and will not spawn in a cramped space.
3. 3.Light everything else in the fortress thoroughly. This is the critical step: other fortress mobs and other dark surfaces steal your spawn cap. Torch the walkways and seal off the areas you are not using.
4. 4.Leave the platforms dark. They are the only place you want spawns.
5. 5.Funnel them into a drop. Open edges or a central hole they walk into.
6. 6.Drop them far enough to leave them at low health but alive.
7. 7.Kill from a safe gap with a Looting III sword. This gives you the skulls and the XP.
8. 8.Hoppers into a chest for coal and bones.

Combine it with a blaze farm

You are already securing a fortress, and fortresses contain blaze spawners. The lighting work you do for one farm directly benefits the other, and both feed the same trip.

Our blaze farm guide covers that side. Blaze rods give blaze powder for eyes of ender and brewing, so a combined fortress project produces skulls, blaze rods, coal and bones from one secured location. It is the single most efficient Nether build you can do.

From skulls to a beacon

Once you have three skulls:

1. 1.Build the Wither: four soul sand or soul soil in a T shape, three skulls on top.
2. 2.Fight it somewhere safe. Our Wither guide covers arenas, gear and the two phases — the Nether roof is the usual choice, and you are already up there.
3. 3.Collect the Nether star.
4. 4.Build the beacon and the pyramid. Our beacon guide covers construction, and the beacon calculator gives exact block counts and effect ranges per tier.

A full pyramid needs 164 mineral blocks. An iron farm or a gold farm is the practical way to get there.

Safety

Fire Resistance is close to mandatory — the Nether is lava and fortresses sit over it. Bring a lot of blocks for bridging, milk for the Wither effect, and a bow for ghasts. Take an Ender Chest so a death in the Nether does not lose the skulls you just spent an hour collecting.

Our nether travel guide covers navigating back, and the nether portal calculator handles the 8:1 coordinate conversion so your return portal lands where you expect.