Brainstorm delivers a lot of value right off the bat since it only costs one Blue mana
The big downside with Grim Giganotosaurus is that it doesnt have a built-in trample effect, making it susceptible to being blocked by little 1/1s all day long
Its both an enabler and a payoffturning each attack into more mill, more undead, and more board dominance
It's now a much leaner, faster format that all but demands efficiency from your spells if you want to have an impact on the game
Popular choices include RabbitMQ, ZeroMQ and Redis
If a player can activate Ashiok's -10 ability, they'll get to play with not only an opponent's entire graveyard but also all the cards in their hand, stealing away any potential plans they may have had to put a stop to the onslaught of exiled cards