one piece card game four emperors TCG: The Emperors- Pack [Op-09] This product contains OP-09 The New Emperor -

Blackblade Reforged

These are usually collector-focused and can command high prices, especially when the card is popular, the number is desirable, or the set has strong demand

Extort was a good ability in Limited, never really saw play in Standard outside of a few incidental cards like Blind Obedience or Crypt Ghast, and is fantastic in EDH, since the ability scales up with the number of opponents

Lets look at cards with more potential

The base version of this card might not be top, but I can guarantee the most expensive card that you can get in the set will be an Edgar card

There aren't any cards that scream graveyard synergy floating around either, so this common may just end up relegated to the sideboard at best