I've noticed this in the past while that any of the lotteries for the heal moderate/serious wounds any self healing class is not eligible to enter. So that leaves out clerics, FvS, rangers, palidins, and artifcers. I can understand that you'd want to limit the lottery to allow non-self healing classes to have the best chance. However, the ingredient for artificers to use their healing 'spell' is the potions themselves. For this reason, I think artificers should be listed as eligible to enter/win this lottery.