Copper sulfate

Crafting: 1 Copper Ingot, 1 Gunpowder and 1 water bottle creates 4 copper sulfate crystals

FUNCTION:

Corrosion Potion: Could damage armor durability (except for netherite and leather), and damages anthropods

Farming: works as an alternative to bone meal

Building block: can be crafted with 4 crystals to form a vibrant blue decorative block for builders

Copper tnt: could destroy blocks, but doesn't damage players (chemical explosion)

This addition would give Copper more uses, introduce new combat and farming features and create a reason for players to farm copper in larger ammounts