So, the Jersey Devil is like PU on a stick? You can trigger it’s ability on your own creatures or on your enemies, and the copy goes to your field? That’s and awesome concept! I have quite a few experimental Trio’s in which I used both entropy and Aether, specifically for PU. The cost is high, so that balances it somewhat. Over all a very mean little devil!
Have you considered making it cheaper, and weaker? Maybe 6
for a 0atk 2hp creature, with the skill costs the same? Or is that too low to draw the attention of the AI for balancing issues… For pvp I would think that because of it’s huge potential to carbon copy the field in your favor, it should be difficult to play, possibly needing to be buffed by chaos power or blessing or quint to make it more stable, and at a cheaper cost you can afford to risk it unprotected…
Just some thoughts, it’s also quite nice the way it is! Well done. I hope it makes it to the next phase!