Approach of the Second Sun is the exception to the rule and will make an impact on Standard from the start
Conversely, Hail, Caesar offers a tour de force of Fallout's greatest villains
Fallen Empires was somewhere between 300-390 million cards, with the two more exact official statements being 321 million and 340 million (both of them from 1995 in different publications of The Duelist)
Flying, trample, protection from instants The card types that could appear in your graveyard are artifact, creature, enchantment, instant, land, planeswalker, sorcery, and tribal (a card type that appears on some older cards)
That was years ago, and in a quick look at just the past year, there are more than 300 cards that work with +1/+1 counters
Cipher wouldn't be quite as easy