The climax of the episode is the transformation of Luffy into .
: This strategic upgrade proves devastating. The crew’s coordinated attacks are dismantled, and key members like Franky are knocked unconscious after a failed attempt to use a giant slingshot maneuver called "Kuwagata". The Forest Dwellers' Gift One Piece (Dub) Episode 370
: Luffy is stuffed with 100 shadows . Most people would pass out or die after two or three, but Luffy’s legendary willpower allows him to hold all 100. The climax of the episode is the transformation
While the main crew is being beaten, Luffy is in the Thriller Bark forest. He meets a group of victims who have had their shadows stolen by Moria. They reveal a secret: if a person has a strong enough spirit, they can "host" the shadows of others to temporarily gain their skills and strength. The Forest Dwellers' Gift : Luffy is stuffed
: Moria uses his shadow-manipulation powers to stretch Oars' limbs, allowing the giant to mimic Luffy’s "Gomu Gomu" rubber abilities.
Here is an interesting breakdown of the story as it unfolds in the English dub: