How do you beat the haunting in kingdoms at war

Step 1:
Defeat 94 500 health of apparitions

Step 2:

Use the item ''Seal of deflection'' to bring the Seal of the Dead down to 20%

Step 3:

Defeat over 200 000 health of apparitions

Step 4:

Use the same item to bring the Seal of the Dead down to 0%.

Congratulations you are finished!

PS: You need at least 400k attack power to hit, or 100k spy power (apparations are weaker to spys)