Got lucky with one of my DO packs from the weekend ranked and pulled a diamond card. Sold that and bought more packs to expand my collection, pretty happy with where it's at right now.
Didn't take too long for me to get competitive pre-mythic, but that was before the flourish nerf, Played light for a while after the nerf and managed to reach mythic with it but then dropped down to diamond again. Currently playing mostly magic.
RE: Staying competitive