Great post, I love your formatting. Congrats on making 15k CP, that's a big milestone! I am quite a bit behind you but am also making Fire my first priority. My current plan is to work on Water next, but your choice of going for Life in order to take advantage of cheaper summoner costs is making me wonder if I should reconsider that - those summoners aren't cheap, and make up a significant portion of the deck cost!
RE: I Finally Hit 15k Owned Power - Collection Review + Next Steps!