If you've been paying attention to Magic: The Gathering price movements over the past week, it's pretty obvious what must be causing fluctuations for this card, which came out in 2023 in the March of the Machine MTG set
The forty percent gem rate is notably lower than you might expect for a modern promo, and that tells an interesting story about production quality and packaging
Obviously, they are a house in a Muldrotha, the Gravetide, and as they grow, you can either mill yourself or other players
If you want to track prices for this set as time passes, TCGPlayer offers handy price guides for both March of the Machine and Multiverse Legends
The answer, it turns out, is kind of the way that the company is staying afloat at all: Pokmon cards