I was happy with my creatures, but I think I should have played
Sudden Storm over
Retraction Helix. I played the Helix for the heroes and the inspired rare, but the heroes were attacking all the time, and you can't use the Helix on a critter with summoning sickness.
Voyage's End was strangely unsatisfying.
Hero of Iroas is a powerhouse, and could be a first pick in draft. And both white and blue Nyxborn are really good.
You should definitely maindeck all enchantment removal you open. This may be skewed a bit since I haven't seen a single red or green spell played the whole tournament, but still.