At the beginning of combat on your turn, another target creature you control gains haste and gets +X/+X until end of turn, where X is that creature's power
As long as youre okay living without the Ultimate Box Topper (you should not to be okay living without the Ultimate Box Topper), you should be able to get these packs without much of a problem
Gathering Stone makes it believable that every stone, leaf and liquid has mass in this world
Sometimes, it played a starring role in control decks, like Olle Rades Counterhammer deck from PT Dallas 1996: Lands (26) Spells (34) 4 Fireball 3 Nevinyrral's Disk 4 Lightning Bolt 4 Counterspell 2 Hammer of Bogardan 1 Dissipate 3 Force of Will 1 Pyroclasm 3 Control Magic 1 Balance 4 Pillage 2 Incinerate 1 Recall 1 Zuran Orb Sideboard Honorable mention to Control Magic
But the price of each case can range widely depending on a number of factors like set age, available supply, and the expected value of the set