Flame Grilled LeRoi
To cover Shadow Man in flames, follow these steps. Make your way to the very last room in the Temple of Life (it holds the Baton). Next, move to the last small room on the right, and press Action at the altar.

Shadow Man will offer your Cadeaux in exchange for an energy upgrade.

Press Action again at the altar. Shadow Man will say something about the Loa moving out of that altar. Run out and head to the altar next to the one you were just in. Press Action at the altar. If everything goes well, you should see a "Cheat Activated" message flash accross your screen (in the way Luke's teddy bear does). Go into your inventory and you should see a new item, the Book of Shadows. Select it and your cheat should be there. At the time I found this, I had 24 Dark Souls, and that might make a difference, but I don't think so.