yugioh ice barrier structure deck : of the Frozen Prison [SD40] — Paper Playmat「1 Mat」 - OjamaCard Effect Monster Rarity Structure Deck - "Freezing Chains"

The Chronicles Deck | The Fallen & The Virtuous Regular price 16.49Regular price 19.99 Sale price 16.49 Yu-Gi-Oh

Slakoth [Reverse Holo] #160 (Pokemon Paldea Evolved | Pokemon Cards) prices are based on the historic sales

4 The Party Legends Who Needs A Full Party When You've Got Swords

Lanturn [1st Edition] #38 Pokemon Neo Genesis Keep track of your collection value over time

Try and trade for some of Bants exalted stuff (Rafiq of the Many, Finest Hour) since taking someones creature with Rubinia and then sending it buffed up with exalted at someone else can be quite fun

Hopefully that example gave a basic sense of what you should be thinking about when building a mana base