The side deck is a work in progress, mostly you can ignore it, but I will go over it briefly if you care for it: Main Deck Total: 40 Monsters: (22) 3 Fluffal Dog 3 Edge Imp Chains 3 Fluffal Bear 2 Edge Imp Sabres 3 King of the Swamp 1 Fluffal Owl 2 Fluffal Sheep 3 Fluffal Mouse 2 Fluffal Wings Spells: (18) 2 Galaxy Cyclone 2 Frightfur Fusion 1 Raigeki 3 Fusion Conscription 2 Polymerization 2 Dark Hole 2 Dark Fusion 1 Frightfur Factory 3 Toy Vendor Extra Deck: (15) Fusions: (11) 2 Frightfur Sabre-Tooth 1 Frightfur Leo 1 Frightfur Bear 2 Frightfur Wolf 3 Frightfur Tiger 2 Frightfur Sheep XYZs: (4) 1 Constellar Ptolemy M7 1 Adreus, Keeper of Armageddon 1 Castel, the Skyblaster Musketeer 1 Wind-Up Zenmaines Side Deck: (15) 3 Gorz the Emissary of Darkness 3 Mystical Space Typhoon 3 Forbidden Chalice 3 Prohibition 3 Royal Decree Monsters: As far as the monsters go, its hard for me to say there is any possible better way to have the monster lineup in this deck

Not really even that good, though being a cheap red creature makes it easy to recur and reuse
You can check out the cards in the Dominaria United Commander Card Image Gallery, as well as the regular cards in the Dominaria United Card Image Gallery and the Booster Fun variants of Dominaria United cards
If you're wondering how much your Pokmon cards are worth, the best way to find it out is to consult a collector's guide or an online database
By 2011, Guinness World Records had named Yu-Gi-Oh