This plugin adds the Mace to the lower versions of the game, as the Mace is for version 1.21 by the time I am writing this. The Mace's crafting recipe is unique and requires specific materials: 1 diamond block in the first row, columns 1 and 3 of the second row, and 1 stick in columns 2 of the second and third rows. This intricate recipe ensures that only players with the right materials can craft the Mace, adding an extra layer of challenge and reward to the game.

And this is for the resource pack of the custom item Mace: