There are a number of reasons for this: Its very manageable to upgrade them and keep the decklists updated I can play them frequently and see new cards more frequently I can keep fresh on play patterns and sequencing so I can play faster I can ensure they are all doing something different The last one is super important to me keeping my decks as fresh as possible, and not overly relying on the same cards or play patterns
This Duskmourn card was valued at $7.30 when the MTG set was released, but it's since shot up by 324% to a price of $30.95, according to MTG Goldfish
So much so that it might be worth running some kind of tutor effect for such as Vampiric or Enlightened if you do go down that route
The higher the raw value a card has, the more likely that you will increase your cards value providing it grades Near-Mint to Gem-Mint
Either way, just be very wary of board wipes, because nothing attracts removal quite like a field full of Saprolings
If youre interested in learning more about the various real and fan-made Golden Pokemon TCG cards, you can find our guide to them here.