With FILTER, SORT and TAKE functions INDEX/MATCH and LARGE aren't needed
Like most Pokmon cards, the value of Rayquaza C LV.X depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Supreme Victors)
The datamine that unearthed the emblem's image has also revealed what you need to do to unlock - find all 30 of Mega Shine's shiny Pokemon
On top of that, you cant play a Stadium card when another one with the same name is in play
Agatha of the Vile Cauldron The activated ability on Agatha of the Vile Cauldron looks too expensive to be practical, but you can get it down to as little as with a few modifications on Agatha
In a deck like Limit Break, the Vehicle part isn't exactly relevant, but buying back a Sword of the AnimistSword of the Animist that ate a removal spell isn't anything to sneeze at