“ Could be used for killing a certain animal...a prized animal. The bones must be carefully buried or disposed of lest a sorcerer get a hold of it. With the bones of the dead creature the sorcerer can kill the hunter.”
“ An orc male who dislikes the hard warrior life, has disguised himself as an orc female and is learning how to become a Shaman. If uncovered as a male, his fellow orcs will be disgusted enough to kill him.”
“ Mining in a certain area turns all exposed skin (maybe just parts that are actively disturbing the chemicals that cause the reaction) of the those doing the mining to a dark blue color. Will wear off taking as many years/days spent in the mine. ... meeting a party of blue-skinned humans armed with pick-axes etc. Strange disease? Demon offspring? Curse? If they meet only one ex-worker, they will very carefully listen to any stories he says, no matter if drunken or insane, or just makes up to get a beer.”