Spiky Shield
The main weapon you're building around in Spiky Shield Bash Pygmalien is the Spiky Shield, specifically its effect:
"Deal Damage equal to your Shield".
What's nice about the effect is that it doesn't rely on upgrades (upgrades just increases the Shield generation per cast).
This gives you flexibility in building many types of Shield generation engines to power and scale it.
In general, your goal is to find build toward componetnts that are fast and potent!
Properties and Instant Effects
Pygmalien's Properties provide a ton of potential when it comes to speed and scaling (especially if you find them early).
In our 10 win board examples, we use Skyscraper and Vineyard, which have the effect trigger:
"When you use an item".
There's no faster speed in the game as it offers instant effects!
Landscraper
Vineyard
With Vineyard you might be wondering how it powers the Shield engine. Bushel is your answer here as it has another instant efffect that combos extremely well with Vineyard.
Overall, you can create a Shield engine that is only Shield or combines both Heal and Shield.
The key difference is that pure Shield will be better against Burn builds while Heal and Shield will be better against Poison builds.
Both can work! in either case, you'll want to choose the option that you can start ramping and scaling best.