Nether lava cloud

There should be a mob in the nether that is a cloud over the crimson forest that rains down lava to deal with piglins overpopulating. They occasionally go to the lava lakes and suck up lava then rain it on the creature making them hide under trees. Ghasts will shoot these clouds down. When they run out of lava, they decend. They try to fall into lava but if they touch the ground, they die immediately.