See what type of cards you like, learn about them and from there look to expand your collection." In terms of what sets to begin with, you should follow your heart and just go with the one that appeals to you the most
Not only do your equipped creatures have the ability to tap a defending creature when they attack, but when Nazahn enters the battlefield, you get to search your library for Hammer of Nazahn
Or are you just curious as to the relative worth of the cards
Arboreal Grazer This 1-drop is surprisingly powerful in a deck full of lands and has seen play in Standard and other formats, especially Modern Primeval Titan decks
His toons arent much of a problem, but his Relinquished monster can be a pain
While they werent as terrifying as Pegasus or Yami Marik, they were some of the few secondary characters to appear in almost every season