Borborygmos (either version) can help, as one pumps your creatures, allowing them to take more hits as the game progresses, and the other gives you targeted damage
Usually, Blue players will use this to play a game-ending permanent on the field like Emrakul, the Aeons Torn (a massively powerful but massively expensive creature) or Omniscience (an enchantment that allows all spells to be cast for free.) 16 FORCE OF WILL At this point, you probably know that Blue players like to control things
Good way to delve into this new expansion and expand your assortment.
This card looks like one of the more creative examples in this vein, allowing you to give one of your creatures myriad as long as you control your commander
Jirachi is classified as a 3-Diamonds card in the Mega Rising set
Strings used a combination of "Infinite Cards", as well as the Jam monsters, to keep increasing his hand size