ghost of the past yugioh card list price Ghosts From (set) | Yu-Gi-Oh! Wiki all yugioh ghost rare cards

I definitely wouldnt rule out seeing him as a fringe option in cEDH either, even though I think that his lack of a third color will hold him back significantly

1 Phyrexian Delver

When paired with cards like Shuko, Lightning Greaves, or Umbra Mantle, you can repeatedly trigger Nadu at no cost, which puts lands on the board to trigger token generators such as Scute Swarm or Springheart Nantuko - both of which practically reset Nadu's text that its ability triggers twice per turn

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However, it does not create card or mana advantage, so the rest of the deck needs to make up for that