The moves Wizards has made over the past couple of weeks show that Wizards is clearly aware of the fact that it is running out of reprint equity, especially Modern reprint equity, since it has already reprinted such a huge percentage of the expensive cards, in some cases two or even three times
Plus, of all the features of Set Boosters, this one scored the lowest on our surveys of what players enjoyed
It would be great to sell one card for oodles of money and eBay has facilitated some of that
The thickness of your decks is of course massively reduced
For 2 mana and a further 2 equip cost, it does nothing (not even a token stat boost) but generate counters when the creature its on deals damage via battle
For Pokemons 20th anniversary, The Pokemon Company is releasing a special Base Set Pikachu card made from solid gold