There were the occasional color matters cards in the format too, in case someone ran Voice of All or Story Circle against you
How to Calculate Expected Value Before You Buy Expected value is the average monetary worth of a pack's contents
Whenever you attack, exile cards from the top of your library until you exile a nonland card
Today Id like to try an experiment and just stick to blue and red, and see if we cant make an Izzet Giants deck that doesnt try to hard to play a ton of Giants, and just relies on the fact that Glimpse the Cosmos, Invasion of the Giants, and Battle of Frost and Fire are all fine even if you dont draw any Giants (not to mention all three helping you find whichever ones you do play)
It appears that the drop can have different bonus cards, but how many there are is unknown as of now
Their whole deal is that they have a special elixir which, when imbibed, will let a Time Lord regenerate into whoever they want to be (in the Doctor's case into John Hurt, aka The War Doctor)