Gravekeeper decks are focused on getting Necrovalley on the field and then stunning your opponent so that they can not play their cards
The Pokemon TCG: Sword & Shield expansion includes a total of 202 different cards
Holiday sets or special sets dont have booster boxes
Here's how the deck looks with the upgrades added: Also to pre-emptively address some comments: one direction that you can take the upgrades is to really lean into Sliver Gravemother's encore ability and turn the deck into a straight-up Encore deck -- Buried Alive and Entomb cards to put slivers into your graveyard, Convergence of Dominion and Zirda, the Dawnwaker to make encore cost less (though PSA Training Grounds doesn't work, I see people suggesting it but sorry no), Mondrak, Glory Dominus to double the encore tokens, Sundial of the Infinite to keep the encore tokens permanently -- that sounds sweet and all but you'd need to do a massive rework of this entire precon, turning it from a Go Wide Sliver Combat deck to Sliver Reanimator essentially
Temur Adventures, by contrast, usually has Obosh, the Preypiercer as the companion, which means that it can't even run those even-costed spells if it wanted to
They're not the most expensive Yugioh cards, and they're not powerful enough to appear on either the Yugioh banlist or Yugioh Master Duel banlist
