Gusto is a terrible archetype, full of "When" conditions that easily miss timing, cards that barely work together, split between the animals being Winged Beast-Types, and the humans being Psychic-Types, the cards are a relic of Yu-Gi-Oh's past. However, people have tried to make them work by using the glue archetype for the Beast Tri-Type, Tri-Brigade, which improves the deck drastically, but still doesn't make the deck viable by any means. Great if you want to troll or have fun though.
For the decklist, we have a Gusto package of 2x Wind Channeler, 2x Caam, 2x Pilica, 2x Vedir, 1x Sphreez, 1x Laplampilica, and 1x Gulldos, we have a Tri-Brigade package of 3x Fraktall, 3x Kerass, 3x Kitt, 3x Nervall, 2x Revolt, 1x Shuraig, 1x Rugal, 1x Bearbrumm, and 1x Ferrijit, for the rest of the Main Deck, we have my preferred Handtrap lineup of 2x Nibiru, 3x Ash Blossom, 2x Ghost Belle, 2x Veiler, and 3x Imperm, 1x Barrier Statue of the Stormwinds, 2x Tenki(if it were at 3 we would play 3x), 1x Avarice, 1x Called By, and 3x E-Tele, for the rest of the Extra Deck, we have 1x Baronne, 1x Clear Wing Synchro, 1x Formula Synchron, 1x Underworld Goddess, 1x Doom Eagle, 1x Halqifibrax, and 1x Double Dragon Lords
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