Kaiba calls his immensely powerful Chaos Emperor Dragon - Envoy of the End to reset the playing field, destroying Zigfried's hand, his field, and even his ace card Valkyrie Brunnhilde. Zigfried ups his play by reviving his Valkyrie and forcing both players to predict how many Magic Cards they think they'll play or take serious damage if they're incorrect. Seto uses a combo of Soul Release, Spell Reproduction and Dimension Fusion to Summon five Dragons at once and together they destroy Brunnhilde and win the duel.