Final Thoughts: If you plan to sell a card or hold onto it as a long-term investment, grading is often the best choice
Instead, I think a effect that would protect exactly 1 Dark Spellcaster by banishing itself would be good, so Eternal Soul won't kill you, but at least make it so you can save 1 any of your monsters by battle or card effect

The Numbers Why the Format Works for Pokmon Pokmon cards are uniquely suited to Whatnots live format: Visual excitement , Holographic cards, full-art cards, and chase pulls create wow moments on camera that drive engagement Collectibility , Buyers are hunting specific cards to complete sets, which creates urgency when a needed card appears Price variability , Card values range from $0.25 to $25,000+, making both low-ticket and high-ticket shows viable Pack break entertainment , Opening sealed product live is inherently entertaining, combining gambling-like excitement with collecting Community , Pokmon collectors are passionate, social, and willing to spend hours watching shows Nostalgia factor , Millennials and Gen Z grew up with Pokmon, creating a massive buyer pool with emotional connections to the cards For a broader view of what sells well on the platform, see Best Items to Sell on Whatnot
The ex Pokmon are stronger and have more HP than regular Pokmon
Disney Lorcana Overview Each player has their own deck of cards with characters, items, actions, and locations from Disney movies