Ominous Trial Spawner

For the regular non-ominous variant, see Trial Spawner.

Ominous Trial Spawner

Renewable	No
Stackable	Yes (64)
Tool	Any tool
Blast resistance	50
Hardness	50
Luminous	Yes, when not inactive Waiting for players: 4 Active: 8
Transparent	Partial
Flammable	No
Catches fire from lava	No
Map color	11 STONE
Note block instrument	Bass Drum

An ominous trial spawner is a trial spawner that has been altered by a Trial Omen effect carried by a player as part of an ominous trial. It spawns more dangerous mob waves, as well as ominous item spawners, but ejects better rewards and is the only source of ominous trial keys.

Obtaining

Breaking

No tool can accelerate the breaking process of an ominous trial spawner.

Block	Ominous Trial Spawner
Hardness	50
Breaking time (secs)
Default	175.05 (JE) 75 (BE)
Options
Efficiency	000
Haste	001 1JEBE

Legend

• incorrect tool, drops nothing
• correct tool, drops nothing or something other than the block itself
• correct tool, drops the block itself
• italicized can be instant mined

Ominous trial spawners drop nothing when destroyed.

Ominous trial

Trial spawners convert to ominous trial spawners if a player with the Trial Omen effect enters the 14 block detection area and is in the line of sight of the trial spawner. This also happens when the player has the Bad Omen effect, which gets converted into Trial Omen. When a trial spawner becomes ominous, all of its existing mobs are despawned. If the spawner was on cooldown and was not ominous before going on cooldown, the cooldown is skipped when becoming ominous. The ominous trial spawner then immediately becomes active. An inactive ominous trial spawner converts back into a regular trial spawner after cooling down for 30 minutes.

Ominous trial spawners cannot be obtained as items in Survival or Adventure mode. They are technically block state variants of normal trial spawners and can be obtained or created using commands, such as:

Java Edition:

• /give @s minecraft:trial_spawner[block_state={ominous:"true"}]
• /setblock x y z minecraft:trial_spawner[ominous=true]

Bedrock Edition:

• /setblock x y z trial_spawner ["ominous"=true]

Usage

An ominous trial spawner is similar to a normal trial spawner, but spawns more difficult mobs and ejects more powerful loot.

Mob spawning

Ominous trial spawners converted from trial spawners that generate naturally in trial chambers spawn mobs with (better) weapons and wearing armor. Ominous trial spawners with mobs that are unable to wear equipment, such as spiders or silverfish, spawn double the total mob count over the course of the challenge. These spawners also allow an additional mob to be out all at once during their challenge.

Each armor set consists of only a chestplate and helmet with each piece having a 50% chance of being missing. All armor is enchanted with Fire Protection IV, Projectile Protection IV, and Protection IV. In Java Edition^[1], mobs don't drop the armor on death or upon conversion to a drowned. In Bedrock Edition, zombies will drop the armor when converted to drowned, but not on death. The armor is selected from:

• Chainmail armor with bolt armor trim in copper (4 in 7)
• Iron armor with flow armor trim in copper (2 in 7)
• Diamond armor with flow armor trim in copper (1 in 7).

Melee mobs spawn with a weapon selected from:

• Iron sword (4 in 7)
• Iron sword with Sharpness I (1 in 7)
• Iron sword with Knockback I (1 in 7)
• Diamond sword (1 in 7).

Ranged mobs spawn with a bow with:

• no enchantment (2 in 4)
• Power I (1 in 4)
• Punch I (1 in 4).

Ominous trial spawners converted from manually placed trial spawners continue to spawn the same mob as the trial spawner.

Projectile spawning

When at least one player is within the activation range of an ominous trial spawner, every 8 seconds it spawns ominous item spawners above any player or any mob that was spawned by the ominous trial spawner within 14 blocks. The location where it should spawn is determined by first performing a raycast from the feet of the entity to a random height between 2 and 5 blocks above the entity. If it hits a block, this block is used, otherwise the end of the line is used. Which block can be hit is determined by visual box. The item spawns in the center of the block below it, unless the block has a collision box. The ominous item spawner displays a projectile for 3 to 6 seconds before shooting that projectile downwards.

Each ominous trial spawner has a set of 2 projectiles it spawns, one of which is a lingering potion. The lingering potion effect is selected randomly from one of the following (all with equal chance):

• Wind Charged
• Oozing
• Weaving
• Infested
• Strength
• Speed
• Slow Falling

The second projectile is randomly selected from one of the following (again, all with equal chance):

• Arrow
• Arrow with Poison (0:45)^[2]
• Arrow with Slowness IV (0:20)^[2]
• Small fireball
• Wind charge

The potions and projectiles chosen will not change between trials and are based on location^{[note 1]} and world seed, so it is likely that spawners very close to each other will have the same projectiles.

Loot

Ominous trial spawners in trial chambers eject different, better, rewards compared to the non-ominous state.

Like a normal trial spawner, it ejects loot once for each detected player. Instead of trial keys, an ominous trial spawner has a 30% chance to eject ominous trial keys, in which case it drops for all players. The other 70% of the time it drops one of the other items for each player. In Java Edition and Bedrock Edition, each trial chambers ominous trial spawner contains 1 item stack, with the following distribution:

Item	Stack Size	Weight	Chance	Avg. per spawner	Avg. # spawners to defeat
Ominous Trial Key	1	30⁄100	30.0%	0.300	3.3
Baked Potato	2–4	21⁄100	21.0%	0.630	4.8
Steak	1–2	21⁄100	21.0%	0.315	4.8
Golden Carrot	1–2	14⁄100	14.0%	0.210	7.1
Potion of Regeneration	1	7⁄100	7.0%	0.070	14.3
Potion of Strength	1	7⁄100	7.0%	0.070	14.3

{ "chestNames": [ "trial-chambers-trial-spawner-ominous" ], "gameVersion": "Java", "loot": { "trial-chambers-trial-spawner-ominous": { "poolsJava": [ { "items": { "golden-carrot": [ 1, 2, 14 ], "ominous-trial-key": [ 1, 1, 30 ], "potion-of-regeneration": [ 1, 1, 7 ], "cooked-beef": [ 1, 2, 21 ], "potion-of-strength": [ 1, 1, 7 ], "baked-potato": [ 2, 4, 21 ] }, "rolls": [ 1, 1 ], "totalweight": 100 } ], "poolsBedrockUpcoming": [], "itemDataJava": { "golden-carrot": { "itemname": "golden-carrot", "sizes": [ "1–2" ], "sortsize": [ 1.5 ], "sortweight": [ 14 ], "weights": [ "<sup>14</sup>&frasl;<sub>100</sub>" ], "avgamount": 0.21, "chanceany": 0.14 }, "ominous-trial-key": { "itemname": "ominous-trial-key", "sizes": [ 1 ], "sortsize": [ 1 ], "sortweight": [ 30 ], "weights": [ "<sup>30</sup>&frasl;<sub>100</sub>" ], "avgamount": 0.3, "chanceany": 0.30000000000000004 }, "potion-of-regeneration": { "sortsize": [ 1 ], "weights": [ "<sup>7</sup>&frasl;<sub>100</sub>" ], "chanceany": 0.06999999999999995, "sizes": [ 1 ], "sortweight": [ 7 ], "armor": 0, "material": 0, "avgamount": 0.07, "itemname": "potion-of-regeneration" }, "cooked-beef": { "itemname": "cooked-beef", "sizes": [ "1–2" ], "sortsize": [ 1.5 ], "sortweight": [ 21 ], "weights": [ "<sup>21</sup>&frasl;<sub>100</sub>" ], "avgamount": 0.315, "chanceany": 0.20999999999999996 }, "potion-of-strength": { "sortsize": [ 1 ], "weights": [ "<sup>7</sup>&frasl;<sub>100</sub>" ], "chanceany": 0.06999999999999995, "sizes": [ 1 ], "sortweight": [ 7 ], "armor": 0, "material": 0, "avgamount": 0.07, "itemname": "potion-of-strength" }, "baked-potato": { "itemname": "baked-potato", "sizes": [ "2–4" ], "sortsize": [ 3 ], "sortweight": [ 21 ], "weights": [ "<sup>21</sup>&frasl;<sub>100</sub>" ], "avgamount": 0.63, "chanceany": 0.20999999999999996 } }, "superheader": "[[Trial Chambers]]", "poolsJavaUpcoming": [], "structure": "Trial Chambers", "container": "Ominous trial spawner", "itemDataJavaUpcoming": [], "allRollsJavaUpcoming": [], "itemDataBedrock": { "golden-carrot": { "itemname": "golden-carrot", "sizes": [ "1–2" ], "sortsize": [ 1.5 ], "sortweight": [ 14 ], "weights": [ "<sup>14</sup>&frasl;<sub>100</sub>" ], "avgamount": 0.21, "chanceany": 0.14 }, "ominous-trial-key": { "itemname": "ominous-trial-key", "sizes": [ 1 ], "sortsize": [ 1 ], "sortweight": [ 30 ], "weights": [ "<sup>30</sup>&frasl;<sub>100</sub>" ], "avgamount": 0.3, "chanceany": 0.30000000000000004 }, "potion-of-regeneration": { "sortsize": [ 1 ], "weights": [ "<sup>7</sup>&frasl;<sub>100</sub>" ], "chanceany": 0.06999999999999995, "sizes": [ 1 ], "sortweight": [ 7 ], "armor": 0, "material": 0, "avgamount": 0.07, "itemname": "potion-of-regeneration" }, "cooked-beef": { "itemname": "cooked-beef", "sizes": [ "1–2" ], "sortsize": [ 1.5 ], "sortweight": [ 21 ], "weights": [ "<sup>21</sup>&frasl;<sub>100</sub>" ], "avgamount": 0.315, "chanceany": 0.20999999999999996 }, "potion-of-strength": { "sortsize": [ 1 ], "weights": [ "<sup>7</sup>&frasl;<sub>100</sub>" ], "chanceany": 0.06999999999999995, "sizes": [ 1 ], "sortweight": [ 7 ], "armor": 0, "material": 0, "avgamount": 0.07, "itemname": "potion-of-strength" }, "baked-potato": { "itemname": "baked-potato", "sizes": [ "2–4" ], "sortsize": [ 3 ], "sortweight": [ 21 ], "weights": [ "<sup>21</sup>&frasl;<sub>100</sub>" ], "avgamount": 0.63, "chanceany": 0.20999999999999996 } }, "poolsBedrock": [ { "items": { "golden-carrot": [ 1, 2, 14 ], "ominous-trial-key": [ 1, 1, 30 ], "potion-of-regeneration": [ 1, 1, 7 ], "cooked-beef": [ 1, 2, 21 ], "potion-of-strength": [ 1, 1, 7 ], "baked-potato": [ 2, 4, 21 ] }, "rolls": [ 1, 1 ], "totalweight": 100 } ], "allRollsBedrockUpcoming": [], "allRollsBedrock": [ 1 ], "itemDataBedrockUpcoming": [], "chest_type": "trial spawner", "header": "Ominous Spawner", "display": "trial chambers ominous trial spawner", "allRollsJava": [ 1 ], "structID": "trial-chambers" } } }

Ominous trial spawners converted from manually placed trial spawners continue to drop the loot of a normal trial spawner (see Trial Spawner#Loot).

Piston interactivity

Ominous trial spawner can't be pushed by the piston, and can't be pulled by the sticky piston.

Sounds

Generic

Java Edition:

trial_spawner sound type
Sound	Closed captions	Source	Description	Identifier	Translation key	Volume	Pitch	Attenuation distance
	​Block broken	Blocks	Once the block has been broken	block.trial_spawner.break	subtitles.block.generic.break​	0.9	0.8	16
	​Block placed​[until: JE 26.4]	Blocks	When the block is placed	block.trial_spawner.place	subtitles.block.generic.place​	1.0	0.8	16
	​Block breaking	Blocks	While the block is in the process of being broken	block.trial_spawner.hit	subtitles.block.generic.hit​	0.25	0.5	16
	​Something falls on a block	Entity-Dependent	Falling on the block with fall damage	block.trial_spawner.fall	subtitles.block.generic.fall​	0.5	0.75	16
	​Footsteps	Entity-Dependent	Walking on the block	block.trial_spawner.step	subtitles.block.generic.footsteps​	0.15	1.0	16

Bedrock Edition:

trial_spawner sound type
Sound	Closed captions	Source	Description	Identifier	Translation key	Volume	Pitch
	​ ?	Blocks	Once the block has broken	trial_spawner.break	​ ?	1.0	0.8
	​ ?	Blocks	When the block is placed	trial_spawner.place	​ ?	1.0	0.8
	​ ?	Blocks	While the block is in the process of being broken	trial_spawner.hit	​ ?	0.38	0.5
	​ ?	Blocks	Falling on the block with fall damage	trial_spawner.step	​ ?	0.4	1.0
	​ ?	Blocks	Walking on the block	trial_spawner.step	​ ?	0.15	1.0
	​ ?	Blocks	Jumping from the block	trial_spawner.step	​ ?	0.12	1.0
	​ ?	Blocks	Falling on the block without fall damage	trial_spawner.step	​ ?	0.2	1.0

Unique

Java Edition:

Bedrock Edition:

Data values

The ominous trial spawner is technically a block state of the trial spawner. Therefore, it has the same data value structure.

Advancements

Icon	Advancement	In-game description	Actual requirements (if different)
	How Did We Get Here?	Have every effect applied at the same time	Have all of these 34​[until: Fourth Drop 2026]/35​[upcoming] status effects applied to the player at the same time: Absorption Bad Omen Blindness Breath of the Nautilus Conduit Power Darkness Dolphin's Grace Fire Resistance Freezing Glowing Haste Hero of the Village Hunger Infested Invisibility Jump Boost Levitation Mining Fatigue Nausea Night Vision Oozing Poison Raid Omen Regeneration Resistance Slow Falling Slowness Speed Strength Trial Omen Water Breathing Weakness Weaving Wind Charged Wither The source of the effects is irrelevant for the purposes of this advancement. Other status effects may be applied to the player, but are ignored for this advancement. This is a hidden advancement, meaning that it can be viewed by the player only after completing it, regardless of if its child advancement(s), if any, have been completed.

History

Java Edition

Java Edition
1.20.5 Experiment Update 1.21			24w13a				Added ominous trial spawners.
			pre1				Updated textures to match trial spawners.
1.21			24w18a				Ominous trial spawners are now available without using the "Update 1.21" experimental data pack.
							Ominous trial spawners with mobs that are unable to wear equipment now spawn double the total mob count over the course of the challenge.
							Bottle o' enchanting is no longer a possible projectile for ominous trial spawners.
			24w19a				Updated active and ejecting textures to be more consistent across all states as well as the trial spawner.
			pre2				Updated bottom texture to match Bedrock Edition.

Bedrock Edition

Bedrock Edition
1.21.0 Experiment Update 1.21			Preview 1.21.0.20				Added ominous trial spawners.
			Preview 1.21.0.21				Ominous trial spawners now show a preview of the item that is about to be ejected.
1.21.0			Preview 1.21.0.22				Ominous trial spawners are now available without using the "Update 1.21" experimental toggle.
							Updated textures to match trial spawners.
1.21.20			Preview 1.21.10.20				Updated active and ejecting textures to be more consistent across all states as well as the trial spawner.

Issues

Issues relating to "Ominous Trial Spawner" are maintained on the bug tracker. Issues should be reported and viewed there.

Gallery

Renders

• 
  A breeze ominous trial spawner
• 
  A slime ominous trial spawner
• 
  A zombie ominous trial spawner
• 
  A baby zombie ominous trial spawner
• 
  A husk ominous trial spawner
• 
  A skeleton ominous trial spawner
• 
  A bogged ominous trial spawner
• 
  A stray ominous trial spawner
• 
  A spider ominous trial spawner
• 
  A cave spider ominous trial spawner
• 
  A silverfish ominous trial spawner

Mojang screenshots

• 
  Noor looking at an Ominous Trial Key
• 
  A silverfish next to an ominous trial spawner

Notes

References