Attributizer

This mod allows you to use datapacks to attach custom attributes to mobs and items. You can configure all doors to give extra max health when held in the offhand, or cancel the knockback resistance attribute on netherite gear, or increase the base armor stat of a mob by a random amount! It's primarily intended to provide a cleaner way of implementing attribute modifiers from Project: War Dance and Cloak and Dagger, although it works perfectly fine by itself. It also supports setting an item attribute modifier to a fixed value using a custom EQUALIZE operation, which is useful if, for example, you want to equalize the attack speed of all spears in your pack with a single entry..

For an example datapack, see the Github.

Icon is, again, taken from Lorc's game-icons.net.

This mod also includes support for Curios. You can configure curios to give extra attributes when worn.