Here's my oc I finally drew myself

Atrium cornerstone

A unicorn with a passion for architecture and construction. Even thought he can really only use his magic to create scale holograms he still helps build his designs using tool like an earth pony. He uses his magic to project imagines of his blue prints and scamatitcs

He cutie mark can one day when he was playing with blocks. His friend didn't know what it was a pnd when atrium listed off possibility after possibility and everyone realized his capacity for imagining new ways to look at something so crude and his mark apeared mid list even though it took a while to get him to stop creating new back stories for his little cubic structure. His cutie mark look like his old blocks but they represent how he can create something from anything and everytime some one asks about it he some how has a new explanation.

Fun fact, when some one calls him block head he blushes and finds it faltering