Modified feels a bit like Historic, a mechanic from Dominaria, in that it isn't a new mechanic as such, but instead a new way of using shorthand to encourage you to do specific things
These are selected from known chase terms, rarity, and market-price signals when available
All That Glitters decks have always been interesting (to me), and this seems like a natural extension of that strategy
One final note is that I also quite like running Magnemite and Magneton alongside Raichu
If youre new to trading card games, or if you want to experience the game with a deck designed and tested by Team Lorcana, this is a good place to start
So discover is a powerful mechanic that can see prints outside of Lost Caverns and is more likely to return than cascade