Quote Originally Posted by The_Snark View Post
Actually, I suspect that's exactly why we don't see oodles of powerful Infernal relics. Sapient artifacts are powerful, especially when made from a powerful demon, but the cost is non-trivial.
Just because you can replace something doesn't mean that doing so is easy, or that doing so is not wildly painful.

I can lose a third of my blood and replace it, but that doesn't mean I'm going to slash open my arteries on a regular basis, especially if the benefit to doing so is not direct.