It is weighted heavily towards two and three-cost so that you can play multiple cards each turn and have more opportunities to build your board while bouncing other cards back to your hand
Final Fantasy Adventure Towns Ishgard, the Holy See, Jidoor, Aristocratic Capital, Lindblum, Industrial Regency, Midgar, City of Mako, and Zanarkand, Ancient Metropolis each have powerful effects with a range of costs
It won't survive the Lightning Helix or Abrade, but it doesn't have to
The only reason this doesnt take either of the top two spots is because it costs
Zendikar Rising Zendikar Rising was the set that introduced modal double-faced cards, which in this case are cards that can be played on either side
If there should be a discrepancy between this summary and the official rules, the official rules take precedence