Kienzan Disc was the final technique used by Frieza against Super Saiyan Goku as an act of desperation. He used it as his final move because it is as lethal to the user as the opponent...in the end Goku's Super Saiyan speed allowed him to avoid the technique. Frieza was taken from behind by his own technique and sliced in half but amazingly not killed.
This article needs to be updated. You can help Multiversal Omnipedia by adding to it.