Fuuinjutsu Shiki Fuujini i wanna lean dsi jutsu sensei
A sealing jutsu. Summons Death himself, which joins with the actions of the user. The Death Lord reaches into a outline of a soul infront of him which is actually the summoner. When the user grabs the enemy, Death extends his hand through the soul outline and comes out from the stomach of the summoner. Death's hand goes into the enemy's stomach where from it literally rips the soul out. After the soul is pulled back into the user, the user says "Fuuin" which means "Seal" in english and this completes the seal of the soul in the user's body. This can be used until the user runs out of energy, and since it is a sealing jutsu, there is a price. The user pays the price with his life, which death devours. The souls of both the user and the target are kept in the belly of the summoning, and are enemies for all eternity. Apparently if the soul is not completely extracted from the body, Death can cut part of it and seal just the part which he has grasped. In Orochimaru's case this was his arms, which are now lifeless and unusable.