The former (starring Belle and Beast in steampunk inventor getup) emphasizes discarding items and reclaiming them from your discard pile for bonuses
Pokemon cards are typically identified by typing in their name, number, and, if applicable, holo. For example: Blastoise 2/102 Holo. If you see a card without a fraction, its probably a promo card
In terms of power level, most of them would sit roughly between 3 and 5 out of 10, with the more powerful ones coming from Commander 2020
One example may be "500 assorted commons and uncommons, Mirrodin through Shards of Alara era," "2,000 bulk commons from 2010 onwards" or "1,000 pre-modern bulk commons, uncommons and rares." New players who want to cheaply kick-start their collection can buy these bulk lots and gain countless new cards to play with, as well as explore a wider variety of cards than most Magic starter products provide
the only difference is that you get to cast instants basically at any point in the game
But with so many third-party sellers and sketchy offers floating around, figuring out which deals are legit can feel like dodging a Magikarp splash