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The Isolation Dome is a dome that isolates a room its used in from the rest of the world.
When activated, the switches pop up from the ground and power surges around the tips to close it inside a barrier. The dome also separates from the earth and floats around in space. It was first used by Leo Akaba to prevent Yuya Sakaki and Yuri from entering the ARC-V Reactor to become Zarc. Declan, Riley, Sora, and Aster were also trapped with them until Yuya became Supreme King Z-ARC, causing the dome to explode and returning the room back to Duel Academy.
- Yu-Gi-Oh! ARC-V episode 135: "Time to Reunite"