Bristling Hydra is a good option. Unfortunately, nothing can replace Gearhulks. But at least Hydra is a solid win condition that's really hard for your opponents to deal with, and another good, clean way to deal with PWs (one of this deck's weakness, you don't want to rely only on Dynavolt activations to kill them). Replace Incendiary Flow with them, since you don't really want to tap-out without a very good reason with this deck, also Magma Spray is just better.
Now that copycat is gone, there's no reason to run Shock over Magma Spray. Run 2-3, and maybe even 1 more on the side if your local meta is packing a lot of aggro.
Insult/Injury is just not a great card to have. Commit/Memory is a lot better for this deck, and it isn't super expensive. Also, switch anticipates for Censor, it's a really impressive card that your opponent is forced to respect, and if nothing else, it'll cycle and give you similar early game interaction than Anticipate would have. It's all about versatility, and for that reason Censor is just better.
Now that copycat is gone, there's no reason to run Shock over Magma Spray. Run 2-3, and maybe even 1 more on the side if your local meta is packing a lot of aggro.
Insult/Injury is just not a great card to have. Commit/Memory is a lot better for this deck, and it isn't super expensive. Also, switch anticipates for Censor, it's a really impressive card that your opponent is forced to respect, and if nothing else, it'll cycle and give you similar early game interaction than Anticipate would have. It's all about versatility, and for that reason Censor is just better.