So you have to hit it from another angle, like countering it, or destroying their mana base to prevent its replay with the Commander tax or run a non-targeting defensive card out there, or mass removal
While much of the bad of Unglued is only really identifiable in hindsight, the set was popular at its debut, and Rosewater immediately started work on a follow-up
Other things that affect the price of a card are reprints in new sets or being banned
Participation Promo: Preordain For anyone who plays in a Final Fantasy MTG Store Championship, you will receive a neat Preordain promo for your troubles
The first time I saw it in print, I was scared it would bring the whole format down
The Pokemon Company uses these marks to manage set rotation