In episode 39 of Gachi Valt watches Delta create Master Diabolos,the evolution of Venom/Erase Diabolos (destroyed by Arthur Percival in episode 34),the same way…
BEYBLADE BURST God Episode 39 (Preview) - YouTube
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Rantaro argues with Shu 「English Sub」Beyblade Burst Sparking Episode 39 - YouTube
Beyblade Burst Sparking Episode 39! Valt & Rantaro VS Lui & Drum! Shu and Lane Won! Superking Surge - YouTube
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Beyblade: Burst: Season 2, Episode 39 - Rotten Tomatoes