You can get boxes of each of the following pack types, and pay attention to how many packs come in each box since it changes as WotC sees fit
Urza is a singular win condition for the decks that can play him, capable of stabilizing a players life total, drawing additional cards, removing opposing cards under opponents control, creating creatures, and even generating virtual mana by making additional artifacts cheaper to play
Originally intended for checking printing colors and as artists portfolio samples, artists proofs are now popular collectibles
The value you get from a card like this while also being such a proactive play is simply unheard of
One Piece TCG Card Grading Guide Q: What is the most expensive OP-16 card
Its a very versatile ramp card, and its a lot of fun to build around too