Depending on the model, between 750 cards (Magnetic Box) and 2,520 cards (LGGB075)
Like, if you just play Commander or update your cube occasionally or whatever, the amount of product is a plus (because hey, more cards to mess around with!) It's far more crammed for, say, Legacy players (because every single release could add new top-tier playables to the format) and the development team themselves (because they have to design and test, what, three times as many cards a year?)
Bodyguard forces your opponent to challenge Hercules before it can challenge anything else, which buys you crucial time
1996: Auras as Combat Tricks Theres a weird cycle in Mirage of unique Auras which could be cast at instant-speed but at the tradeoff of only lasting a turn if so, so they could function as a slow-to-cast permanent upgrade or a surprise temporary boost