The mod got officially shown by the ark team. With the high quality no untameables mod. You can tame these. There given new mechanics and attacks. Alongside a model update. Allowing it to be fully out of the ground. To tame you'll need death worm horns. Place down a death worm trap. And lure one into it. Onde it's stuck have a strong tame ready as once trapped. It'll start calling nearby death worms for help. Kill them and feed the trapped one horns. And after 3 feeds. Tada you have a death worm of your own. Stick the saddle on and enjoy a very powerful mount