Starting with the humble Counterspell and expanding ever-outward to include a variety of restrictions, boons, and card types, counter magic has defined the way blue decks play the game since Alpha
Consistent Drawing Once again, back in the day, Alpha had Card not found
Even discard decks can splash green to have this remove something and set up a late game plan
As long as it's your turn, nonland permanent cards in your graveyard have retrace
at a more tenable power level can still serve the players who earnestly love playing this sort of deck, while reducing the footprint the deck has in the metagame, by virtue of it being far less consistent
All dice should leave your hands at the same time