Kulrath Zealot Kulrath Zealot has solid base utility as a decent way to fix mana from
Then, when it dies, you get to create a number of tapped treasure tokens equal to its power
Its the grounded anti-air unit, a crucial balance against Flyings dominance
As far as consistent token generation goes, though, I don't think we're going to beat Retreat to EmeriaRetreat to Emeria or Gideon, Ally of ZendikarGideon, Ally of Zendikar
(Also, we have to be careful how much functionality lands have outside of producing mana.) To get the word "room" onto cards and make it something we could mechanically care about, we made Room an enchantment subtype
You do sensibly need answers to it or sac outlets for it yourself but these are relatively easy to pick up and include