For 1 Blue Mana, an opponent may not expect a counter to their big Planeswalker or Board Wipe spell, making Spell Pierce a much more viable card than Counterspell, especially when youre unable to leave double Blue Mana available
Thorough Investigation Clue tokens are another major source of delayed gratification card draw in white
Ive talked about the hopelessness Zendikar faced when the Eldrazi rose, and Ive talked about how Gideon Jura only knew war for most of his life
Kenneth have some history from the early years of the Pro Tour btw, including a 18th place at PT Paris 97 (where the the original enchanter Mark Chalice placed 10th)
This means that market values are still going to see considerable fluctuations as more people open card packs and find some of these treasures for themselves, yet the prices that have been seen online are a good indication of which cards are the most desirable
In 2.5% of Play Boosters, you'll open a Booster Fun rare or mythic rare