I like the idea of the deck, I tried to build a simillar one myself and am super hyped about an aura deck, the thing with yours is that you do nothing on the first 2 turns, you are just dropping lands and if you dont hit a 3rd land you just wont do a thing for the rest of the game and might as well just lose straight away. That said I would recommend you played cheaper creatures and auras, there are quite a bit out there, in my build I experimented with Marang River Skeleton, Gudul Lurker, Rattlechains, Olivia's Bloodsworn and Topplegeist, you could even use Undercity Troll and keep Conifer Strider. As for the auras I suggest you keep only the ones you like the most and exchange the rest for some cheaper ones in the format, like Infectious Bloodlust, Mantle of Webs, Call of the Full Moon, Goblin War Paint, Stratus Walk, Gryff's Boon or Senseless Rage. You will have to make some changes to the deck, but you have some options if you want to keep on playing only this colors, also you will have to change the manabase, 27 is too much for and aggro-midrange kind of deck something around 22-24 would be just fine. Hope I helped with something, cool idea! C: