Hades is a more straightforward payoff that removes a character from play by putting it into their controllers inkwell, and then sticks around after to quest and challenge
Each Play Booster contains 14 Magic: The Gathering cards, including 14 cards of rarity rare or higher, 36 uncommon cards, 69 common cards, and 1 land card
Cards can also exhaust for other reasons, such as singing songs
Yes, through MTG Arena and physical boosters
Shift 6 and evasive make it a mite more playable, and 'Phenomenal Cosmic Power!' lets you play a cheap-ish action card for free any time the Genie quests
New rarities and foil treatments will give collectors more reason to hunt, along with a new Collection Starter Set product