Put a slower patch of ground between yourself and approaching mobs. Chrono Dome changes their movement inside a bounded area, creating time to move without freezing the whole game.
Slow the approach, then change position
Place the field where approaching mobs will enter it. For ten seconds, selected zombies, skeletons, creepers and spiders within five blocks move at half their normal speed.
Use the extra space to move or find cover. Their attacks and projectiles keep working, and the world keeps running. Normal movement returns when a mob leaves the field or the timer ends.

The hourglass creates a place to slow approaching enemies. Use it before they reach you, then reposition while the field is active.
Craft it
Use a crafting table and match the arrangement shown below. Keep spare amethyst shards for using the artifact after crafting it.

Before you try it
- World ticks, attacks, projectiles, AI, and other players are not frozen.
- Only selected mob types are affected. The supplied 0.5 means half normal movement speed.
- Overlapping fields in this project use the strongest slowdown instead of multiplying effects.
Playing this version
Each activation costs one amethyst shard in Survival, with a three-second cooldown. Creative use is free.
Download the beta JAR from Files. Use Minecraft Java 26.1.2, Fabric Loader 0.19.5, Fabric API 0.155.3+26.1.2 and Java 25. Put the mod and Fabric API in the instance’s mods folder; multiplayer needs both on the server and joining clients.
Checked on Windows in a separate test world. Other devices and live multiplayer have not been verified.
Make it yours
Shorten Duration from ten to five seconds for a brief escape tool. Use the mob filter to focus on the encounters you want to change.
Open Chrono Dome in the constructor to change the settings and build your own version. Save its editable project if you want to keep working later.
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