The Meirogan (迷路眼 Labyrinth Eye) is a jutsu Dojutsu that allows the user to transfigure living creatures from one form to another. This jutsu is considered illegal in most countries due to the fact that it can change even the biggest man into a little gecko. Of course these changes are not permanent - they tend to wear off within a few hours - and are also extremely taxing on chakra reserves, as the most skilled master can only produce four transfigurements in a day.