Updated 23 October 2026. Facts on this page come from minecraft.wiki, minecraft.net and the live Artemis PvP server; sources are listed at the bottom.
Trial Chambers Guide: Keys, Vaults and Ominous Trials
Trial chambers are underground copper-and-tuff structures, starting between Y=-40 and Y=-20, full of trial spawners. Beat a spawner's waves for a 50% chance of a trial key, open vaults with keys, and drink an ominous bottle inside to start an ominous trial with better loot, including the heavy core for a mace.
Where do you find trial chambers?
Trial chambers generate underground in the Overworld. The starting room sits between Y=-40 and Y=-20, and most rooms generate between Y=-20 and 0. Journeyman cartographers sell a trial chambers explorer map for 12 emeralds and a compass, pointing to the nearest chamber. It is the only place breezes spawn. See every structure.
How do trial spawners and keys work?
A trial spawner releases waves of mobs (zombies, husks, skeletons, strays, bogged, spiders, slimes, silverfish, breezes and more), with more mobs for each extra player nearby. When every mob is dead it drops rewards: a 50% chance of a trial key for every player, otherwise another item for each player.
A trial key opens a vault, which can be unlocked by any number of players. Reward chests in some rooms share the vault loot table.
What is an ominous trial?
Drink an ominous bottle inside a trial chamber and its trial spawners turn ominous: they summon mobs in high-power gear. When cleared, an ominous spawner has a 30% chance of dropping an ominous trial key, which opens ominous vaults. Ominous vaults hold the best loot, including the heavy core for crafting a mace and the Flow armour trim.
Trial chamber tips
- Bring a shield and plenty of arrows: breezes bounce around and fire wind charges.
- Clear spawners one at a time; more players means bigger waves.
- Save ominous bottles for when you are geared up.
- Breeze rods craft wind charges (4 per rod) and the mace handle.
Does ArtemisPvP have trials?
Frequently asked questions
What Y level are trial chambers?
The starting room is between Y=-40 and Y=-20; most rooms are between Y=-20 and 0.
How do you get a trial key?
Clear a trial spawner: 50% chance it drops a key for every player.
Sources
Every fact on this page was checked against these pages; the wording is ours.