Implementus Kidneystonus is a spell that takes much skill to learn, and only the Elder God Whoagh and Gerbish know it. It is a very painful spell that Whoagh used on Anakin at the First Battle of Mount Dildo. This paralyzed him and the rest is written in other articles.
When the user casts this spell, an orb flies from their hand. The orb contains an ethereal kidney stone that implements itself inside the person it hits. If you dont pass it soon enough it will explode into shards, causing excruiciating pain