Crystal Game (Name work in progress)

There are crystals called Coravine Crystals that the leader of tribes holds that give them the power to control specific elements. There is also one crystal that was lost to society that can give all elemental powers to whoever holds it. The tribal leaders can make smaller versions of the crystals and give those to other people. The crystals attach to your soul so if you lose the crystal you turn into a white husk until you get the crystal back because your soul is in the crystal. The smaller crystals can only be used by the people they are attached to but the bigger crystals can be used by whoever possesses them.

The player will be going after these bigger crystals and when he beats the trusted minions he can either bring the crystal back to the tribal leader and he will get a smaller crystal to have some of the elemental power or they can keep it for themselves and have stronger elemental powers.