The first thing that strikes me is...... You have all those upgrades but not Sundials?!?!
More importantly, in spite of that the Quanta situation in the deck is obviously very good thanks to being a mono.
It's interesting to see that you've made a very offensive deck with this idea, using the Shard for its +atk rather than solely to get Neurotoxin in. I was expecting something more like this:
Hover over cards for details, click for permalink
6rv 6rv 6rv 6rv 7q0 7q0 7q0 7q0 7q0 7q0 7q0 7q0 7q0 7q0 7q0 7q0 7q3 7q3 7q4 7q4 7q4 7q4 7q4 7q4 7q5 7q5 7q5 7q5 7q9 7q9 7q9 7q9 7q9 7q9 7qd 7qd 7qd 7qd 7qd 7qd 8pq
(Just something I slapped together in a hurry, it's not necessarily any good).
But your deck is pretty sweet
To point out some obvious weaknesses, it doesn't respond too well to CC since your creatures are all fairly weak, and as with all Sundial-based stalls it can be a problem if the opponent keeps blowing them up. But SoP and Sundial work together sweet! It's a lot of fun doing not-a-great-deal for a while, suddenly igniting a firework display of 8/2 Deja Vus!
I did find the Scorpions to be slightly problematic, but only slightly. The problem is you want to hit with the poison as soon as possible, but this usually means using one of your shards with only one or two other critters to benefit from it. That's no major issue though, with 6 Shards.
Now you should make one with Death Scorps called Moons Patience
Lol.