Thrawl runes place any person under complete control. The "thrawl" must obide his/her master' wishes, and can't bend acommand to personal likings. A thrawl' physical abilities are boosted rather than lowered. A rune takes one spark of magic to start and afterwards operates on it's own symbols. However for maximum effect the intended thrawl is covered in tatoos of symbols, bathed in a certain oil, put on a stone slate, and given a "full minute of magic in the face". This probably lengthens the effect of the rune, as in less than ideal curcomstances the rune' power weakens over time. If a person has an alter ego the alter ego remains un effected by the rune and still fully controls himself. If no order is given a thrawl has an effort controling himself, but still can.
Turnball Root is th only person known to use thrawl runes.
The known victims are: