User blog comment:SeraphLucifer/Discussion/@comment-89.204.139.7-20151213010629/@comment-89.204.139.7-20151213011353

Why was Dean even effected by this kind of magic at all, Rowenas spell hasn't worked either - so it's kind of weird that the bearer of the mark of cain can be influenced to such spells. The most convenient explanation: The writer didn't intend to bring in this function of the mark until they decided to bring in the darkness arc.