The themes varied between sets, with sets like Strixhaven and Guilds of Ravnica having guild-based themes, while sets like Innistrad: Midnight Hunt had mono-color themes and a special werewolf-themed deck
The deck is surprisingly powerful, able to quickly flood the table with a huge token army that keep you safe and finish off your opponents with lethal combats, but also has some incredible consistency in card draw, interaction, and protection (Ferrous himself comes protected by common removal spells like Swords to Plowshares!)
Its exhaust ability lets you completely mill any opponent who had to mill half their library with another mill card
Historical "Uria"-focused Decks are focused on using Continuous Trap Cards to enable the summon of "Uria", and boost its ATK to very high levels for an OTK
Unlike the Aurochs, it doesn't get to keep its fancy creature type for later