For one thing, the culture of the secondary trading card market is almost as volatile and open to manipulation as the actual stock market, and GameStop is opening itself up a variety of schemes that will be incredibly easy for bad actors to pull off, facilitated by minimum-wage workers who may or may not have any experience or expertise in buying and selling graded cards
This more than makes up for the big weakness of Tombstone Stairwell: its cumulative upkeep cost
UR Ultra Rare Fabled Gallabas X LIGHT Level 4 [ FiendEffect ] ATK 1500 DEF 800 You can discard 1 card to the GY, then target 1 monster your opponent controls with DEF less than or equal to this card's ATK
Since a box typically yields only two ultra-rare cards, collectors are very unlikely to complete the set by purchasing even three boxes
Try removing a few filters.
I figured that Trostani was exactly the sort of card that could win Thragtusk wars and put together this deck, which was very similar to one of the first sketches I made for the format