grey card sleeves 500 Pcs for Trading Card, Matte Card Sleeves Deck Card Protectors Compatible with Baseball Cards, Sports Cards, Game Cards (Grey) Toys Pro-Matte Eclipse Standard Size Card

The best part is that each individual Ultra and Secret Rare cards has the same chance to be upgraded to a higher rarity class thus there can be a pack with 4 Quarter Century Secret Rare and 6 Prismatic Ultimate Rare

Then buy/sell a little to see what is there

Even if the model number is incorrect or the number of cards is not listed, you will receive the card in the product image

Shadow in the Warp Suggested Cut: Otepec Huntmaster Shadow in the Warp provides a steep discount to creatures and provides a little incidental damage

Knightmare Corruptor Iblee special summons itself to your opponents side of the field, and prevents the controller of the card from special summoning anything other than Link monsters

The natural play pattern is to load Obuun up with its own counters so the creatures it makes hit even harder, but this could also lead a counters-based deck that uses it to spread a bunch of free counters around