Understanding how to negotiate with another vendor, knowing how to pull up pricing data, and walking through a deal is crucial for saving yourself time and money when making purchases on singles
To get a Turn 2 Henzie (and therefore be able to Blitz a creature on Turn 3), you have to run around 12-15 mana dorks, and/or cards like Utopia Sprawl and Elvish Spirit Guide/Simian Spirit Guide
From Mirage on, the standard for booster boxes became 36 booster packs per box
Special Japanese releases like Vstar Universe, for instance, guarantee at least one hit
Furthermore, Delney can make Hare Apparent and those 1/1 Rabbit tokens unblockable against any opposing with power three (or greater), giving your creatures some evasion that could break parity during clunky board stalls