The Xenolord Slab is an Epic consumable added to Palworld with the Feybreak content. It has one job. Offer it at a Summoning Altar and it calls in Xenolord, a mechanical Dark/Dragon raid boss built from a set of fragments you gather out in the world.
Quick answer: Collect 4 Xenolord Slab Fragments, craft one Xenolord Slab at any Workbench, then place it on a Summoning Altar in your base to start the raid.
Xenolord Slab recipe and stats
Crafting is simple once you have the materials. Four fragments go in, one slab comes out, and you can do it at any Workbench you own, including a basic Primitive Workbench. The slab weighs 1, sells for very little, and stacks up to 9,999, so there is no penalty to keeping spares.
| Item | Materials required |
|---|---|
 Xenolord Slab |  Xenolord Slab Fragment x4 |
| Crafting station | Any Workbench |
| Type | Consumable (Epic) |
Where to farm Xenolord Slab Fragments
Fragments are the real bottleneck. They come from the dungeons on Feybreak Island, and the drop is not generous, so plan on several runs before you have a full set of four.
| Dungeon | Level | Drop |
|---|---|---|
| Feybreak Cavern | 58 | Xenolord Slab Fragment x1 (roughly 25% per clear) |
These caverns are tuned for late-game teams, so bring your strongest Pals and best weapons before diving in. If you would rather skip the combat, the hard Volcano and hard Snow Pal Expeditions each hand over one fragment per completed run. Two full rotations of both cover all four fragments without a fight.
Set up the Summoning Altar
The slab does nothing in your inventory. You need a Summoning Altar built inside a base to use it. The Altar unlocks in the Technology tab at Level 33 and is cheap to build.
| Level unlocked | Technology | Materials |
|---|---|---|
 33 | Summoning Altar | Stone x100, Paldium Fragment x20 |
What the slab summons
Offering the slab spawns an exceptionally powerful Level 65 Xenolord as a raid boss. It fights like a warship, cycling attacks such as Cosmic Meteor, Satellite Bit drones, the Astral Ray and Omega Laser beams, and a close-range Beam Slash. As a Dark/Dragon type it takes extra damage from Ice and Dragon attackers, so build your squad around those elements and keep everyone spread out to avoid the meteor drops.
Note: The Summoning Altar consumes the slab on use. Each battle costs one Xenolord Slab, so to fight again you must farm another four fragments and craft a fresh slab. The confirmation is straightforward. When the offering registers, the raid encounter starts and the slab leaves your inventory.
If you are chasing the hardest version, the Xenolord (Ultra) Slab uses four Ultra Slab Fragments instead and summons a Level 80 variant with far higher health and damage. The standard slab covered here is the entry point, and once you have the fragment routine down, repeating the raid is mostly a matter of expedition timers.
