Minecraft: Java Edition Snapshot 24w13a, published on March 27, 2024, introduced the optional Ominous Trial loop in Trial Chambers. A player carrying Bad Omen can convert it to Trial Omen near an eligible Trial Spawner, face a stronger encounter, and potentially receive an Ominous Trial Key. That key opens an Ominous Vault, a harder-to-find container with a more valuable possible reward pool than a standard Vault.
This was a 2024 Java snapshot rather than a current version label. Mojang later retained the Ominous Trial Key and Ominous Vault feature set in the Java Edition 1.21 “Tricky Trials” release.
What was Minecraft Snapshot 24w13a?
Snapshot 24w13a was a Java Edition test release published by the Minecraft Java Team on March 27, 2024. Its defining addition was a second layer of Trial Chamber gameplay: players could deliberately turn a normal Trial encounter into an Ominous Event, accepting greater danger for access to a separate key and vault reward path. The official snapshot notes describe the experiences this way: “These optional experiences accessed through Bad Omen are now known as Ominous Events.”
You can read the original announcement in the official Snapshot 24w13a changelog. Snapshots are Java Edition test builds, so mechanics and loot tables in this article describe that historical snapshot. The later Java Edition 1.21 release notes retain the Ominous Vault and Ominous Trial Key feature set.
What is an Ominous Trial in Minecraft?
An Ominous Trial is a more difficult version of a Trial Chamber encounter. It begins when Bad Omen changes into Trial Omen as you enter the detection range of a Trial Spawner that is not already Ominous. The spawner then switches to a blue-glowing, soul-flame version that can use stronger equipment, projectiles, and potions for its mob waves.
The system is optional. Entering a Trial Chamber without Bad Omen leaves the spawner as a standard Trial Spawner and gives the normal Trial experience. Carrying Bad Omen gives you the choice to approach an eligible spawner and trigger the harder mode; there is no requirement to make every chamber ominous.
How do you get Bad Omen for an Ominous Trial?
In 24w13a, Bad Omen comes from an Ominous Bottle rather than being treated as a permanent pre-raid state. The bottle is a consumable item with five levels and a duration of 1 hour 40 minutes. It breaks when consumed, stacks to 64, and can be found in standard Vaults or dropped by a Raid Captain defeated outside a Raid.
- Obtain an Ominous Bottle from a standard Vault or from a Raid Captain killed outside an active Raid.
- Consume the bottle to receive Bad Omen at its listed level.
- Travel to a Trial Chamber and locate a Trial Spawner that has not already become Ominous.
- Enter that spawner’s detection range. Bad Omen is converted into Trial Omen, and the ominous encounter starts.
Trial Omen lasts for 15 minutes multiplied by the transformed Bad Omen level. For example, a level III transformation gives 45 minutes of Trial Omen time. The timer matters if you are clearing several chambers or preparing a second attempt after an interruption.
How did 24w13a change Bad Omen and raids?
The snapshot separated the effect’s uses instead of launching a Raid immediately whenever a player entered a village. On entering a village with Bad Omen, the effect now becomes Raid Omen for 30 seconds. After that delay, the Raid starts at the location where the player gained Raid Omen.
Drinking milk clears Raid Omen during the 30-second window and prevents that Raid from starting. This gives you a way to avoid an accidental village attack, but milk does not serve as a way to obtain Trial Omen; the Trial Chamber conversion requires Bad Omen and an eligible Trial Spawner.
What makes an Ominous Trial Spawner different?
An Ominous Trial Spawner keeps the basic Trial Spawner concept but raises the combat stakes and changes the visual presentation. Once converted, it glows blue and emits soul flames. Its waves can include mobs wearing equipment as well as hostile projectiles or potions, so cover, armor durability, and a plan for ranged attacks matter more than they do in a routine trial.
- Existing wave reset: Becoming ominous despawns the spawner’s existing mobs and resets its challenge.
- Persistent state: The ominous state remains until the challenge is defeated and the spawner finishes its cooldown.
- Different drops: Its completed reward roll uses an ominous loot set rather than the regular Trial Spawner’s set.
- Activation check: The spawner must have line of sight to activate under the snapshot’s Trial Spawner changes.
24w13a also adjusted ordinary spawner scaling. Simultaneous mobs increase by 0.5 for each additional player instead of by 2, the Baby Zombie baseline drops from 3 to 2, and line of sight is required for activation. These changes affect the Trial Spawner ruleset generally, including multiplayer planning around an ominous encounter.
How do you get an Ominous Trial Key?
Defeat the waves produced by an Ominous Trial Spawner and wait for its completion reward. In this snapshot, the spawner has a 30% chance to eject an Ominous Trial Key. That is a chance per defeated ominous spawner, not a guarantee that every ominous run supplies a key.
- Carry Bad Omen into a Trial Chamber and approach an eligible, non-ominous Trial Spawner.
- Let the effect convert to Trial Omen when you enter the spawner’s detection range.
- Clear the more powerful mob waves, including any equipped mobs or projectile and potion attacks.
- Collect the reward ejected when the ominous challenge is defeated.
- If the reward roll produces an Ominous Trial Key, keep it for an Ominous Vault; a regular Trial Key is not the substitute listed for that lock.
The usual Trial Key chance in the snapshot is 50% for a regular Trial Spawner. Ominous mode therefore trades that higher standard-key chance for the 30% Ominous Trial Key roll and access to a different vault category.
How do you open an Ominous Vault?
Find an Ominous Vault inside a Trial Chamber and use an Ominous Trial Key on it. Ominous Vaults have a distinct texture and soul flames, and they are placed in harder-to-find locations than standard Vaults. Their position is part of the risk-and-reward design: finishing the fight is not necessarily the end of the expedition because you still have to locate the less conspicuous container.
- Search the chamber for the Ominous Vault texture and soul-flame effects rather than assuming every Vault is ominous.
- Approach with an Ominous Trial Key in your inventory.
- Use the key on the Ominous Vault to activate its reward roll.
- Check the resulting items against the possible ominous rewards below; the changelog lists possibilities, not a promise that one vault contains every item.
What loot is in an Ominous Vault?
The snapshot’s Ominous Vault pool is aimed at rarer progression and cosmetic rewards. The official notes list these possible rewards:
| Possible reward | What the snapshot specifies |
|---|---|
| Ominous Bottle III–V | Higher-level Ominous Bottles, within the listed III through V range. |
| Enchanted Golden Apple | A possible high-value consumable reward. |
| Flow Banner Pattern | A banner-pattern item associated with the ominous reward pool. |
| Flow Armor Trim Smithing Template | An armor-trim template in the ominous pool. |
| Wind Burst, Breach, and Density | Mace enchantments listed as possible Ominous Vault rewards. |
| Heavy Core | A possible rare component in the ominous pool. |
Because these are possible rewards, opening one Ominous Vault does not guarantee a Heavy Core, a specific mace enchantment, or any other named item. The 30% key roll and the vault’s reward roll are separate points of uncertainty in the loop.
How did standard Trial Vault loot change?
Snapshot 24w13a also rebalanced the regular Vault so that its rewards were easier to distinguish from ominous prizes. Standard Vaults could contain Ominous Bottles I–II, while several of the most sought-after items moved out of that pool.
| Item or category | Standard Vault status in 24w13a | Ominous Vault status |
|---|---|---|
| Ominous Bottles | Levels I–II could appear. | Levels III–V were listed as possible rewards. |
| Flow Banner Pattern | Removed from the standard pool. | Listed as a possible reward. |
| Flow Armor Trim Smithing Template | Removed from the standard pool. | Listed as a possible reward. |
| Heavy Core | Removed from the standard pool. | Listed as a possible reward. |
| Trident | A very rare Trident chance replaced the former Heavy Core chance. | Not identified as an additional ominous-only Trident source in the snapshot notes. |
| Guster Banner Pattern | Remained a standard-Vault exclusive. | Not listed among the ominous rewards. |
| Bolt Armor Trim | Remained a standard-Vault exclusive. | Not listed among the ominous rewards. |
The table describes pool membership, not guaranteed contents or equal probabilities. A standard Vault can still be valuable, especially for items that remain exclusive to it, while the Ominous Vault is the route for the Flow pattern, Flow trim, Heavy Core, and the listed high-level rewards.
What is the difference between an Ominous Trial and a standard Trial?
| Comparison | Standard Trial | Ominous Trial |
|---|---|---|
| Trigger | Approach a Trial Spawner without converting Bad Omen. | Carry Bad Omen; it becomes Trial Omen near an eligible non-ominous spawner. |
| Encounter | Ordinary Trial Spawner challenge. | More powerful spawner with blue glow, soul flames, equipped mobs, and projectile or potion attacks. |
| Key | Regular Trial Key, with a 50% chance noted for the snapshot’s standard spawner reward. | Ominous Trial Key, with a 30% chance noted for a defeated ominous spawner. |
| Vault | Standard Vault in ordinary chamber locations. | Ominous Vault in harder-to-find chamber locations. |
| Reward focus | Standard items, including Guster Banner Pattern and Bolt Armor Trim exclusives. | More valuable possible rewards, including Heavy Core, Flow items, higher-level Ominous Bottles, and mace enchantments. |
The distinction is therefore more than a visual variant. Ominous mode changes the trigger, combat profile, key chance, vault location, and reward table, while standard trials remain the lower-risk way to obtain their own exclusive items.
Do Ominous Trials work in every Trial Chamber?
Not necessarily. The snapshot notes warn that some of its features only work in freshly generated Trial Chambers. A chamber created before the relevant snapshot changes may not exhibit every new behavior or loot adjustment even if you visit it after updating.
For the most reliable test, create a new world or travel to a Trial Chamber in terrain generated after installing the snapshot. If a previously explored chamber appears to lack an ominous spawner, changed loot, or another 24w13a behavior, treat the chamber’s generation date as a possible explanation rather than assuming the mechanic is unavailable everywhere.
How should you prepare for an Ominous Trial?
- Carry the correct effect: An Ominous Bottle gives Bad Omen; simply carrying a regular Trial Key does not trigger ominous mode.
- Check the spawner: The conversion occurs only when the spawner is not already Ominous. An ominous spawner will not be converted a second time.
- Bring room to maneuver: Equipped mobs, projectiles, and potions make open sightlines and escape routes more important than in a routine wave.
- Plan the timer: Trial Omen lasts 15 minutes times the transformed Bad Omen level, so avoid starting immediately before a long detour.
- Keep raid safety separate: If you are carrying the effect into a village, remember the 30-second Raid Omen delay and use milk if you need to cancel that raid before it begins.
- Search after the fight: Ominous Vaults are deliberately harder to find, so inspect side rooms, elevated ledges, and less obvious chamber routes after the spawner is defeated.
Did Snapshot 24w13a become the current Minecraft version?
No. 24w13a is a dated Java snapshot from March 27, 2024, intended for testing before the 1.21 release. It is best understood as the point at which the Ominous Trial loop, Ominous Trial Key, and Ominous Vault were documented together, not as a current version number.
Mojang’s Java Edition 1.21 “Tricky Trials” release changelog later retained that feature set, giving the snapshot historical context. Exact loot probabilities and other details can change between snapshots and releases, so use the 24w13a numbers above specifically when discussing this snapshot.
Why does the ominous loop matter?
24w13a gave Trial Chambers a deliberate risk decision. Standard trials offer their own rewards and a 50% standard Trial Key chance noted in the snapshot, while Bad Omen lets a prepared player opt into a tougher fight for a 30% Ominous Trial Key chance and access to a separate Ominous Vault pool. The design also preserves meaningful reasons to run both modes: standard Vaults retain the Guster Banner Pattern and Bolt Armor Trim, and ominous Vaults concentrate the Heavy Core, Flow items, and higher-level rewards.
Frequently Asked Questions
Can an Ominous Trial start a village Raid by itself?
No. Trial Omen is the Trial Chamber form of the effect and does not itself launch a village Raid. A separate village interaction converts Bad Omen into Raid Omen, which has its own 30-second countdown.
What happens if I drink milk before reaching a Trial Spawner?
Milk removes the active omen effect, so you will not have Bad Omen available to convert into Trial Omen. It is useful for canceling Raid Omen, but you would need another Ominous Bottle or eligible Raid Captain drop before attempting an ominous chamber run.
Can a regular Trial Key open an Ominous Vault?
The snapshot defines the Ominous Trial Key as the key for Ominous Vaults. A regular Trial Key belongs to the standard Trial and standard Vault path, so bring the ominous variant when you locate the soul-flame vault.
Why did my old Trial Chamber not show the new behavior?
Some 24w13a features require a freshly generated Trial Chamber. A chamber generated before the snapshot may not contain every updated spawner behavior or loot change, making a newly generated area the safer place to verify the mechanics.