Shadow Shrine, Creature Coin

On your expedition in the Ancient Oasis, you come across a curious Creature Coin. It's unlike any coin you've seen before, and it has the Skulls on both sides. You decide to take it with you, and when you get back to camp, you show it to your Expedition Leader. They're astonished by the fact that you brought a Shadow coin home with you. They direct you to the Shaman who shares that with the help of the coin, you're able to create a new, more powerful Shadow creature that can help you on your future Expeditions and protect the Tribe.