Control Warrior have to go to classic style. Notice that in Galakrond mode Priest lose healing. Use a TTK of Ysera , Alex + Buff Grom to do the job. If you draw Grom with Galakrond, anf you have Ysera Awaken or nightmare, you can burst 19 with Grom plus 5 from the weapon is 24. Use Voone to double your Ysera to increase the chance
If you have a discount Alex and in Galakrond with weapon from you can instantly drop the Priest from full to 7 health.
It will be hard but CW can still win, not hopeless.
Control Handlock with a 3 card Mechathun OTK package can beat the Priest easily.