I'd also add Cyber Dragons into the side deck for the Traintrack matchup, along with running Beelze of the Diabolic Dragons
Its okay if youre not familiar with other players decks because youll only need to play more games to familiarize yourself with the meta
By first summoning the monster, its power to Special summon any Superheavy Samurai from your deck or hand (provided you have no spell or trap cards in your Graveyard) then opens up the ability to Synchro summon any of the many Synchro monsters the deck has at its disposal
Fusion Summon 1 Fusion Monster from your Extra Deck, using monsters from your hand or field, including "Dark Magician" or "Dark Magician Girl"
This is all to say that itll be worth watching the price of Codsworth, Handy Helper closely
More than a simulation of collecting real Pokmon cards, this is a simulation of battling with them, something that surprisingly few card-collecting kids actually do