Nami uses her Clima-Tact to create a lightning rod, channeling a natural storm into the guardian beast. She earns a new log pose that can detect "emotional magnetic fields."
Luffy fights a Logia user who controls "Void Mist" (anime-only: a substance that absorbs sound and haki). Luffy wins by inflating himself and dispersing the mist with a giant sneeze. one piece episodes wiki
Title: The Log Pose Arc: Uncharted Waters (Filler / Semi-Canon Arc – Episodes 1085–1096) Overview The Log Pose Arc is a 12-episode anime-exclusive arc that takes place immediately after the Wano Country Arc and before the Final Saga's first canon island. It follows the Straw Hat Pirates as their Log Pose unexpectedly locks onto an uncharted island chain called the "Kuzunoha Trails," forcing them into a survival race against a rival crew. Plot Summary Episode 1085: "A Strange Needle – The Log Pose Goes Wild!" As the Sunny leaves Wano’s waters, the Log Pose spins erratically. Nami detects a magnetic anomaly. Suddenly, a massive whirlpool pulls them toward a cluster of floating islands shrouded in mist. Nami uses her Clima-Tact to create a lightning
Robin finds a broken Sky Poneglyph on a floating ruin. It mentions the "Fourth Ancient Weapon" (a fake-out – it’s actually a map to a lost library). Sanji protects her from Mist Serpents. Title: The Log Pose Arc: Uncharted Waters (Filler
A bacterial fog makes the crew sick. Chopper synthesizes a cure using the island’s rare flowers, but must fight a giant infected Sea King. Flashback to Hiriluk.
The Sunny is stuck in a canyon. Usopp uses a new Pop Green “Magnet Vine” to create a bridge, then snipes a switch from 500m to open the sea gate. He briefly dons the Sniper King mask for morale.