If "The Winged Dragon of Ra" is sent from the field to your GY while this card is in your GY: Special Summon this card
If there is only one mismatch, it might be a simple oversight, but if several overlap, you should think carefully
Sure, it came with the caveat that your life points had to be lower than your opponents, but that never actually came up because you were always losing anyway
Paying 6 mana over two turns to turn The Ur-Dragon indestructible seems okay, but the deck doesn't have much room for colorless lands, so I don't think I'd want to include something of that nature in the deck unless you really want your creatures to be indestructable
Retrace (You may cast this card from your graveyard by discarding a land card in addition to paying its other costs.) Everyones gotta die somehow
But that shopping spree did reverse a months-long downward trend in the cards Market Price, and its been trending upward ever since as low-cost copies have become harder to find