Need help with Arena deck

{"ops":[{"insert":"Looking for help with my arena deck without using many rares/mythics\n\nHello! I'm looking for a good standard deck using "},{"insert":{"card-link":"Eshki Dragonclaw"}},{"insert":", "},{"insert":{"card-link":"Karakyk Guardian"}},{"insert":", "},{"insert":{"card-link":"Dragonclaw Strike"}},{"insert":", and "},{"insert":{"card-link":"Consult the Star Charts"}},{"insert":" without many many rares/mythics. The current deck I have can beat starter decks most of the time, but fails to beat good constructed decks. I'm not sure if I need more ramp or to have some lower cost creatures. Any help would be appreciated.\nThanks!\n"}]}