Having three known cards on the bottom of your library is less immediately powerful than some scry or reordering at the top but it offers far more ongoing information
Contaminated Drink Exxaxl: There are plenty of Dimir decks that will not mind another instant speed draw a card effect that also makes them mill on their turn
Asmo is a real threat, but it takes a fair amount of time to set up the engine, which opponents can often abuse
Unlicensed Hearse This has to be one of the most dominant graveyard hate cards ever printed
Pyroblast and Red Elemental Blast are a great ace up the sleeve when pushing through permission, and in a pinch can destroy a problem permanent too
Its maybe the worlds most complex game ever made (with almost 20.000 unique cards printed), but they managed to split their development and design to both very enfranchised players and new ones, making the game still interesting for long time fans and accessible to anyone who is trying to become a player