Thrakkus the Butcher can offer similar output, and Ran and Shaw is excellent as a card that pumps your other dragons and is sometimes multiple dragons in one card
Peter Pan, Lost Boy Leader, is an emerald card that makes good use of the new location cards introduced in Into the Inklands
Commander Themberchaud Trample When Themberchaud enters, he deals X damage to each other creature without flying and each player, where X is the number of Mountains you control
I could totally see him in an aggro Stonebrow, Krosan Hero, or Borborygmos deck
This version surpasses the Metal Energy by a significant margin in value, but there's also a divide between their eye appeal
Getting 2/2s simply for playing Magic is a strong ability on its own, and opens up options for mana ramp, Voltron (making 1 creature super strong through powerups), Curses like Curse of Opulence for table politicking, and several other cool, unique effects that Auras can bring to the table as you build a token army