HP Tournament Finals: Lunar Sentry Totem vs Echo Mine Scatter | Marble Race Showdown | Echo Circuit Chapter

English AI-generated marble race and physics simulation tournament video.
Format: 4 contenders, HP battle system, shrinking arena, and sudden-death pressure.
Featured contenders: Lunar Sentry Totem, Volt Prism Nova, Echo Mine Scatter, Cosmo Mine Scatter.
Grand final matchup: Lunar Sentry Totem vs Echo Mine Scatter. Champion: Lunar Sentry Totem.
Rules: every fighter starts with 100 HP, collision damage accumulates, and the last survivor wins.
Keywords: marble race, physics simulation, ASMR collision sounds, HP tournament, AI battle shorts.
AI-generated content disclosure: enabled.