It's a similar story to how creatures were eventually errata'd to Dinosaurs
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Of course, seeing as this card is designed for Commander play and seeing how power creep has impacted Magic over the years, this card is rather pushed for Goblin players
That said, as an extra option on a land, its pretty excellent
If you didn't discard a card, no player can have discarded a card that shares a card type with the card you discarded, so no player loses 3 life
I'm personally not very optimistic about the future of all the various crossover products coming down the pike based on this, but I do understand that Games Workshop has some extremely restrictive controls on their IP that makes working with them and their lore rather challenging