The Grimclaw Tigrex is a powerful mutation available in Monster Hunter Stories 3, and you can obtain it pretty early if you manage to repel the Invasive Diablos. Located at Tarkuan, it will take you several hours to unlock the location first.
Once done, you can then work towards obtaining the mutation. The key is to first obtain the Tigrex by hatching it from its egg. Let's look at how to obtain the egg first.
