Digger Illager

They can spawn rarely in mineshafts of either biome, maybe even having their own Spawner, or in raids. They can mine through blocks with their iron pickaxe and iron shovel (they use both, one in each hand) in order to reach their targets, and they can mine staircases up to their targets, or just mine the block below them. They also use these weapons to attack. They drop their tools, cobble, and common ores like coal, iron, copper, or gold, making said ores renewable