PSA, CGC, and BGS all allow you to look up the exact details and population reports of a card
Its not about timing the market perfectly, but about understanding the flow so you can make informed decisions for your collection
Even though Tier 1 staples like Tarmogoyf and Dark Confidant have leveled off or increased in price, many of the other staples have taken quite a hit from the sets release, especially uncommons and rares that derived part of their price from casual play and just plain scarcity
Rosewater has mentioned that the current color pie is too well balanced to introduce a sixth color to
Storm will count spells cast by any player, including ones that were countered or failed to resolve
Between the variety of fetch lands and the sheer number of multi-typed dual lands, theres probably a complicated mathematical equation that can estimate the number of combinations a single fetch land can search up for a deck