“ The frozen wastes stretch for miles around. Something waddles through the snow. It's a penguin: An emperor penguin. It waddles slowly, meandering toward the sea. The ranger freezes. 'Stay very still,' he warns. 'Don't move at all.' 'What is it?' I ask, breathlessly. 'It's the most dangerous creature in the whole Yahoo Tundra, and that penguin's about to kick its butt...' (Sorry, Epi! I couldn't resist!)”
“ When you sleep, your soul briefly returns to the place where it was created/goes to when it dies, and seeks nourishment. Everybody's soul is created with a little link (or you could say a greater entity calls it back) to that place so that it can return easily, but upon death, the soul returns via that and annihilates the link as if returns.
Also, as an added thingy, you could say the entity supplying the link, or residue of the links themselves, (whichever) is the source of all arcane power.”