The lifecost is interesting, since black has historically been better at card draw than green, but this seems to argue in a different direction, although green has always been good at drawing through creatures, specifically
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If you do, search your library for a Dragon creature card, put it onto the battlefield, then shuffle
Magdas Treasure-making ability ramps into these dragons or tutors them up, and there are complementary Treasure-making dragons like Goldspan Dragon or Gadrak, the Crown-Scourge
A few considerations that come to mind: Sword of the Animist + Umezawa's Jitte and perhaps Homeward Path since your also running the humble defector and Karn
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