After Jesus healed the withered hand, the Pharisees plotted with whom to kill him?

Answer: The Herodians

Mark 3:6 says the Pharisees went out and began plotting with the Herodians how they might kill Jesus.

“Jesus looked around at them with anger and sorrow at their hardness of heart. Then He said to the man, “Stretch out your hand.” So he stretched it out, and it was restored. At this, the Pharisees went out and began plotting with the Herodians how they might kill Jesus.”— Mark 3:5-6 (BSB)