This game is great! It's my best one for this game jam so far. Well done!
Great work on getting power ups in. It adds replayability in that the player will want to play again to see what the other effects do. Very charming art. And excellent concept.
I really liked the lightning strikes sending the sheep into panic.
There were times when i felt it was a bit unfair to have sheep in panic off screen. That may be intentional to add to the mayhem. But it would be interesting to see you experiment with either pulling the camera back so the whole field is visible at all times. Or some sort of minimap so you can see panic that's happening off screen.