Decided that I should go for this deal as it's been a long time since I spent some Nutaku gold, and it seems like the 50% off premium gacha was worth it.
After 3x11 pulls rolls, I managed to pull 4 new rainbows: Pumpkin, Dendrobium, Ionocidium, and Dogwood.
I'm pretty satisfied with my rolls, though I wish that I pulled Suzuki Grass or Lagurus in my pulls, which was who I really wanted.