This blog will have things that have already been explored by others but which I need to lay out for myself. Or potentially new ideas which I need to refine (and check if others have not yet theorised on) before posting on the forums.
TLR uses Lerasium for Feruchemy:
1. No answer to whether TLR and Hoid use Lerasium for Feruchemy
2. TLR did not eat a Lerasium bead
3. However, he did take a Lerasium bead for himself
Conclusion: The Lord Ruler either uses Lerasium for Feru