It provides the ability to grind out when you run out of cards, almost giving you an extra card draw each turn, but better, as it's a permanent of your choice from your graveyard, nulling any efforts by your opponent when using removal spells
Mirko, Obsessive Theorist lets you return a creature from your graveyard to the battlefield, so long as that creature's power is less than Mirko's
It also emphasizes poison mechanics and card synergies, leading to some wicked combos that can swiftly eliminate those pesky Pokmon from the battlefield
What I originally wanted to build was a Kylie Minogue deck with Astrid and Cammy from Street Fighter (Minogue played her in the movie) but I found out that Cammy was not one of the Street Fighters that got cards a while back so that idea got scrapped
The Beamtown Bullies is also a different effect, as it animates your dead creatures, not the cards you have in play
The worst grade you can get for centering is a 4 but if the card exhibits the features of a higher grader except centering, you'll have the chance at a grade 9 with the OC (Off-center) qualifier