One Piece Episode 722 English Dubbed Episode Title:A Blade of Tenacity! The Gamma Knife Counterattack!Episode Description:Doflamingo shrinks the Birdcage, causing the citizens of Dressrosa to run away in panic. Luffy fights Doflamingo, but Law switches places with him in order to land his land his strongest attack, Gamma Knife, on Doflamingo, destroying his body from the inside an forcing the Shichibukai to his knees. Doflamingo attempts to retaliate, but is knocked back by Luffy. Law explains that after he got shot the first he reduced his lifespan to created a ROOM so large its boundaries couldn't be seen and swap places with one of Doflamingo underlings and swap back after Doflamingo stop shooting. Law stops Luffy from attacking, insisting he needs to be the one to end it before preparing to finish Doflamingo off and avenge Corazon.