Odd one out

The true question is who is "YU" .

Are you YU. 

Is the dead child YU.  

Or was the game YU all along?

How to perform the dark ritual - 

1. Prepare four fronds of darkwort by mashing them to a pulp in a mortar.
2. Place the darkwort, a goat's hoof, bezoar and a copper item in a receptacle. 
3. Chant the Mourning Song as the contents of the receptacle are boiled over candlelight. 
4. Burn the solution over a circle that has been burnt into the ground. Place the ash in a goblet.
5. The goblet will begin to self-combust. The ritual will then complete. 

Not truly sure what is meant to happen once you collect all the stuff. Was nice moving around and reading all the little text boxes.