The pain land cycle, which began in Ice Age and finished in Apocalypse, are excellent mana sources
There are tons of NPCs who make their way into MtG to help out in different ways, just like the real game
This is almost definitely considered gambling and you might end up with nothing
We got to see a lot of cards, including many callbacks to previous Lorwyn characters, mechanics like Evoke, cycles like the Incarnations, or individual beloved cards like Bitterblossom
Side sets in the Digimon Card Game dont usually have a ton of value per card or even any meta cards that will see a ton of tournament play, but in EX7 Digimon Liberator, there are plenty of cards that are strong enough to win a tournament and collectible chase cards for every type of fan of the game
It could even be a great punishment for players in your EDH games who get greedy with the card draw