Decks that were already strong could now beat you in a whole range of new ways without ever having to tap out for more than a three mana-creature, and once that creature was on the table it felt like it both dramatically slowed your ability to attack and made the situation worse on a continual basis as every turn that went by meant another card (or often cards) available to the opponent to make Dr
Necron Dynasties has cards that care about when artifacts enter the battlefield, when artifacts die, when artifacts are milled, and when artifacts leave the graveyard
I said it when talking about Queen Marchesa and Jared Carthalion, True Heir: you need to combine monarch with other strategies for it to work at its best
If Vivi Ornitier is banned, this could be the direction the Izzet deck moves in the aftermath
Honorable Storm Watches Crow Storm may have started as a joke, but WotC eventually turned it into a card that, while not playable, exists