you have to stock your graveyard and find the card you want discounted
First edition and very rare Pokmon cards, especially holographic ones like Charizard, are Pokmon cards that are worth money, sometimes reaching thousands of dollars in the collector's market
Scrap Trawler - Enables death loops and graveyard value
The fact it turns into essentially a Blightsteel Colossus on the other side is so hilariously irrelevant in most games that it speaks to how powerful that front side actually is
You can find card sleeves for rare and oversized cards at specialized stores or online retailers, as they usually have a good range of sizes available
If you could Boomerang it back to your hand, you could really control the Mana production of the game for even more turns, allowing your deck to do what it does best and in Blue, thats control