If you're looking for one, I'll show you exactly where and how to get the Heavy Core in Minecraft. To find a Heavy Core in Minecraft, you must take on an Ominous Trial. I recommend taking on Pillager forces to defeat the Raid Captains that may hold Ominous Bottles.
How to Get a Heavy Core in Minecraft (1.21) — Reliable methods
In this video, I show you how to find and get a heavy core and how to use a heavy core in Minecraft to craft a mace. This works in both Minecraft Java and Bedrock Editions.
How to Get and Use a Heavy Core! (1.21+) | Easy Minecraft Tutorial
Learn exactly how to get Heavy Core in Minecraft, where to find it, how to unlock Ominous Vaults, and much more!
How to get a Heavy Core and make a Minecraft Mace - PCGamesN
Every way to get Heavy Core in Minecraft: crafting recipes, mob drops, chest loot, mining, trading, and more. Step-by-step guide updated for 1.21.4.
To get a heavy core, drink an ominous bottle, then complete an ominous trial to get an ominous trial key. Use the key to open an ominous vault. There's a 7.25% chance an ominous vault will give you a heavy core. You can also mine heavy cores that have been placed in the overworld by other players.
This Minecraft tutorial explains how to craft a Heavy Core with screenshots and step-by-step instructions. In Minecraft, a Heavy Core is a new item that was introduced in Minecraft 1.21 - Tricky Trials Update.
To craft a mace in Minecraft, you need two items: a breeze rod and a heavy core. Place the two items in any crafting grid, with the heavy core above the breeze rod, as per the image above.