Main Subtractions: All the Vengevine stuff (Gravecrawler, Skaab Ruinator, Hedron Crab, et al.)
For instance, Tarkir: Dragonstorm 's Draft archetypes focused largely on three-color pairings
It's easier to cast and doesn't cost any immediate life, but draws only 3 cards
For the most part, however, its all fair
You can even cast the Monument and exhaust it on the same turn before your opponent removes it
(Look at the top two cards of your library, then put any number of them into your graveyard and the rest on top of your library in any order.) Whenever an opponent draws their second card each turn, you may return this card from your graveyard to your hand