If you want to make it faster, I'd remove the
cards. Especially Spirits are slow in growing their damage.
5 Squids is a lot and they barely deal any damage. I'd keep two at most and replace the rest with Dragons.
Purify... they don't really help with speed and your squids are too squishy, so not even wort being healed.
I'd remove them (or keep one for poison decks).
With the
cards removed, you get some space for a 3 third shield (they shall take over the work of your squids, and since your deck won't be the fastest, slowing down your enemy and reducing his damage will help you). You can fill the rest with
pillars to get a late damage boost by spamming nymph queens.
Final deck: