@flannan Well, I was putting on hold research of japanese myths for a while, but wasn't it something like - when you pray for harvest - "bless us with abundant harvest; please don't scorch our fields" and if you pray for wealth "grant me fortune - please don't get me broke" - kinda feel? Also omikuji dealing with both blessing and curses at part of the course?
Ah, and curses that you perform at shrines, might be latest addition in forms of urban legends, but legends are legends non the less.