There are 46 different themes and some may work better than others, but the interactions are fun to discover
add 1 "Paleozoic" Trap Card from your Deck to your hand
#4 Badgermole Cub Earthbending is an interesting mechanic that Wizards has done a good job of making viable, since the creature land comes back as a land if killed or exiled
The Shonen Jump Championship 2007 prize card version of this card has seen massive jumps in price, starting at $8,000 in 2020 before jumping to $25,000 by early 2022
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Numeron Wall's Quick Effect to activate Numeron Network from the controller's hand or Deck, if they send it from the hand or field to the Graveyard while they control no cards, except for copies of Numeron Wall itself, is likely a reference to an anime-only effect of Numeron Network