Advice on my Helga, Skittish Seer deck

I finally decided to move on from just upgrading pre-cons and built a deck with [[Helga, Skittish Seer]]. The idea is to use Helga as a value engine and put giant creatures on the field as fast as possible. Happy to take any comment/critiques.

https://moxfield.com/decks/HjF3WyFWBkqsRgi1KXCR2g