Ynnead
Ynnead is the Eldar God of the Dead.....or at least he will be, as he is currently being made. He is currently in godly limbo at the moment as the Eldar try to get enough pure souls or at least desireless souls together to give him enough mojo to form together into a proper god.
The whole process of god creation is a bit of a tricky one to explain but we'll try to keep it simple.
Basically Ynnead is the Eldar's last hope against Slaanesh. When the bitch-goddess was born she devoured a lot of Eldar and their souls and most of their gods and basically caused a lot of things to get badly screwed up. To add further salt into the wound, the surviving Eldar found Slaanesh was constantly hungering for their souls, laying in wait for the moment an Eldar would die and then he would completely devour them.
To save them from this fate, the craftworld Eldar use a spiritstone to try their soul inside upon death. The spiritstone is then placed within the infinity matrix of the