Major Skills suggest to interrupts or avoid:

1) Deals magic damage to the target in front. (With warning)

2) Release an electric field, deals magic damage (Multiple times) to targets in front. (With warning)

3) Shoots an electric ball that will explode at the target position to cause magic damage, then deals extra magic damage per second to the targets within radius. (With warning)

Challenge Video

Result when interrupt or not interrupt the Elf King's AOE skill.
Boss- Elf King

Boss- Elf King