Okay, most of my edits on the species pages thus far has been focused on fairly minor clean up and clarification. However I feel that the strategy section here should be almost, if not entirely, removed. As this is a major edit I wanted to discuss first.
I don't think scumming early levels is a good idea with anyone, even a mummy. Early on, where extra experience would be helpful, you confront the fact that the amount of experience you get from rats and hobgoblins and the like very quickly becomes irrelevant due to the increase in cost of getting to next level with skills and character. The actual benefit you gain is extremely small due to the slow rate of monster (re)spawn in levels, and the OoD timer adds enough of an element of risk to offset whatever small gains you might secure.
As far as spamming high level spells... By the time you can cast high level spells despite a mummy's bad aptitudes, you are late enough into the game that hunger cost won't be an issue, regardless of species. So really a mummy lets you abuse channeling, which is extremely rare in early game unless you worship Sif, and even then channeling isn't really great unless you can leverage that in certain ways (which largely depends on background)—recent nerfs to summoning really hurt the "best" ways to abuse mummy channeling (mummeling?), actually.
Mummies are a challenge species and so maybe it makes sense to have a strategy section here, I don't know, but then I think the strategy section should begin by saying, "Mummies are a challenge species, but if you want to win one, here are the things you have to consider." But in that case it should also be much shorter and primarily dedicated to drawing attention to the mummy's major disadvantages and how to offset them (rF-, no potions, and as a corollary confusion = paralysis for mummies, and so on).
Yours, and into