Trial Spawner & Raid Planner

Configure trial spawner setups for solo or co-op, and plan raid waves by difficulty and Bad Omen level.

Trial spawner and raid numbers are community-documented approximations that scale with player count and difficulty — exact totals vary by seed/version.

Quick guides

How to use this tool, and the questions players ask most.

Trial chambers: making spawners ominous and what the vaults actually dropOminous vaults hold the Mace and Heavy Core, but only if you make the chamber ominous first. Here is the

What Y level do Trial Chambers spawn at in Minecraft?

Trial Chambers generate in the Deepslate layer between Y-levels Y=-20 and Y=-40 in the Overworld. They can occasionally extend higher or lower depending on terrain shape, but never generate above Y=0.

How to locate a Trial Chamber using commands?

Locate the nearest chamber by running the command /locate structure minecraft:trial_chambers in the chat console. Alternatively, cartographer villagers at Journeyman level sell a trial explorer map for 12 emeralds and one compass.

Can you redo a Trial

Spawner in Minecraft?

Yes, a trial spawner resets automatically after a 30-minute cooldown (36000 game ticks) once defeated. When active, it calculates mob count dynamically: base mobs plus 2 additional mobs per extra nearby player.

How do you activate a Trial

Spawner in Minecraft?

A trial spawner activates automatically when a player in Survival mode enters within a 14-block line-of-sight radius. The spawner begins glowing, emits flame particles, and spawns waves until the required mob kill quota is reached.

How do Bad Omen levels affect Raid waves in Minecraft?

Higher Bad Omen levels from 1 to 5 increase the chance of raiders spawning with enchanted weapons and can trigger wave bonus mobs on Hard difficulty, which is what the Trial Spawner & Raid Planner calculates across all 7 waves.