Sand golem

I think of this concept as complementary to a post someone else made about a year ago, about introducing sand layers similar to what happens with snow layers. This would be a way to finally get renewable sand and would add a nice little challenge to desert wells if it's added as an hostile mob there alongside a few Husks. Sand golems leave a trail of sand behind them and "throw" sand as an attack, applying a very short slowness effect to their target. You can summon your own Sand golem by placing two cut sandston blocks and a carved pumpkin.