If you want to keep the dim shields, that means we need to either dump dragons or pendulums. My suggestions already dumped 24 pendulums. Therefore, what would you dump from another deck in place of the pendulums?
There are only 4 real options: Poison, dragons, scorpions or heals. That is it. Frankly we can't afford to dump the heals. I am already dumping too many dragons. That leaves scorpions and poisons. We have plenty of frogs left so if we start making frog based decks maybe we don't need either of those...
But those are our choices, phase shields, poisons or scorpions.