Blood and souls for Makhleb!
Henzell says...
Prior to 0.25, by severity: 1: 1-11 damage or random uselessness. 2: 3-25 damage, 0-18 {contam} or {weakness}. 3: Badform for random2(200) turns, 3-20 dmg AND 0-34 {contam}, 5-27 dmg AND delete mutation, 5-27 dmg AND 1-2 bad mutations.

Information based on master branch and the great LearnDB.
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