Ofuda

Ofuda are paper talismans from the eastern system,  a Japanese style of practicing with command words written on them. When released the spirits will carry them off to the right targets, following the path of least resistance. Runes work, but care must be taken to frame it, so the paper is a diagram and contact with anything but the ends or the edges releases the word; normally runes will just go off right away, indiscriminate.