are any yugioh cards valuable Yu-Gi-Oh! Worth Money? The Most Expensive YuGiOh Cards:

When we break up the colors this way, we can see a context to build a story around, which is something that all good Legends need

Aside from the card's potentially wide appeal, there are a handful of Houndour depicted, and multiple Pokemon frequently make a card more desirable

Chart shows the price of Warrior of Light #17 at the end of each month going back as long as we have tracked the item.

That's counting every unique card in every mainline and special set released since 1999, including Secret Rares (but excluding holo and reverse holo variants)

If you want to know more, you should read my guide about how Pokmon cards are made