It gives you a Treasure token to help you ramp and potentially snipes a powerful card from your opponent that you can cast thanks to the Treasure you make so you always have the color you need
3) Let the player modify the deck with the cards that are unlocked- Now, I know that Pokmon is still working on their Deck Builder, so I should give them a little bit of a break on this one, but if you unlock a card to be played in your deck, you should be allowed to mess around with the card counts
[1] Gold and Silver were first released on November 21, 1999, in Japan
Boros is about cheap aggressive creatures, Golgari is centered in the graveyard, but Dimir isn't quite as easily pinned down
- Toxic
All sorts of different types of decks want this card, and now they have better access to it at cheaper prices