Epic Marble Race: Prism Sentry Totem vs Nova Mirror Clone | AI Physics Battle | Echo Arena Run

English AI-generated marble race and physics simulation tournament video.
Format: 4 contenders, HP battle system, shrinking arena, and sudden-death pressure.
Featured contenders: Prism Sentry Totem, Zenith Devour Core, Zenith Twin Oblivion, Nova Mirror Clone.
Grand final matchup: Prism Sentry Totem vs Nova Mirror Clone. Champion: Nova Mirror Clone.
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.