Who Wins This Physics Simulation? Nova Mirror Clone vs Echo Prism Nova | Marble Tournament | Echo Cup Cut

English AI-generated marble race and physics simulation tournament video.
Format: 4 contenders, HP battle system, shrinking arena, and sudden-death pressure.
Featured contenders: Nova Mirror Clone, Echo Storm Beacon, Prism Prism Nova, Echo Prism Nova.
Grand final matchup: Nova Mirror Clone vs Echo Prism Nova. 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.