It teaches a lot and gives a taste of the format (explicit language warning for the uninitiated on PKs content)
Much like Green Goblin, the side that gets the most traction here is Venom, Lethal Protector, which can snowball as a draw engine and cheat permanents into play by sacrificing creatures
I remember when Diregraf Colossus was first previewed for Shadows Over Innistrad
Most if not all of the unlimited edition LON Ultra Rares were initially printed with a silver imprinted name, which got noticed during the production process
Trade-In Credits: Some local game stores offer trade-in credits for your unwanted cards, which can reduce the cost of your purchase
There's also Tainted Adversary , the third entry in the multikicker cycle, which can get +1/+1 counters and make many Zombie tokens