What if some crazy wizard created an artifact that empowered rodents that touched it with one random supernatural power? Preferly right out of the pages of your favorite four-color. (But only one power!) This item does not convey any sort of intelligence boost.
Somewhere along the line, someone very powerful lost their marbles. Literally. Possessing a marble allows incredible clarity of thought about a particular related subject.
There was a Beggar he was starring at me as if he is going to kill me but as I get nearer and nearer I found out his resisting something I don't know what but his really resisting something something un explainable and then I saw a knife on his hand and I though his going to kill me but when he raises the knife and then he stoped and said "run child" that I knew his resisting himself' his blood thirsty self, to stop, to stop killing people at the other day when I go were he was I saw him lying DEAD! and I saw a knife stabed strait throught the heart and that knife was the one he tried to stab on me last day and I knew he KILLED HIMSELF because its the only way to get out of his problems...