This is a very powerful and fun deck that features a ton of powerful dinosaur creatures that allow you to quickly overrun your opponent
Some EDH decks just want to ramp into Kozilek, cast it, draw cards, and sometimes even attack and decimate a board
Wrenn and Six, Courser of Kruphix, Azusa, Lost but Seeking, and Dryad of the Ilysian Grove are all great
Being able to maintain parity might be all you need and having a card that can keep you a bit safer early on and then go on to lock someone out of the game entirely is nice, it just requires fairly specific decks
I personally can make no judgment on people that buy these counterfeit cards
Wall of Mourning, 1W: with it, the top card of the library may be removed from play for each opponent, and if Coven triggers, it may be put into the hand at the beginning of the end step