Rule 92 forbids the use of human test subjects for medical or scientific experiments unjustified for the subject’s health. Mutilation of said subjects is also forbidden. Not that I expect Vedalken physicians care much about the Geneva Convention. The MTG Wiki describes the Vedalken as having “a dispassionate view toward life,” so go figure. I’m gonna go out on a limb here and say they should care about Rule 92. Also gonna go out on a limb and say Rule 92 could reasonably be extended to elves.