These things will rip everything to shreds, if you want to battle it, you will need multiple dinos with lots of health and damadge (trike, stego, bronto) and you want to have range. To tame it, you want a bird that u can equipt weapons on, and shoot it from the sky. If you want to know how powerful it is, it drops prime. The Rex drops 2 Rex arms. This thing drops 2 sets of claws, held at equal value. Definitely a good tame for both defense and offense, and is good at collecting things, especially fiber.
If you find this thing RUN it took me out in two hits and completely demolished my home and murdered my raptor and my little otter cuddles please like to pay respects to my little cuddles kept me warm on the cold nights