毒盛の術 (Dokumori no jutsu) Doku means poison, and mori means a serving of (food). The tool used, 蠱毒(kodoku), is a fabled poison from tribes of southern China. It is said to be created by putting 100 poisonous creatures, such as centipede, spider, toad, scorpion, and snake into a sealed container and bury it in dirt, allowing the creatures to devour each other. The last creature that remain is said to contain the combined poison from all the other poisonous creatures, and is then used to make the kodoku. It is usually delivered hidden in the food to the victims.