windburst support is no damage

https://youtu.be/mLRMHheFD0c

pob : https://pobb.in/0H_H1Y4RmJm3

Using vaal flicker strike deals no damage until the strike completes.
That is, only the projectiles generated by the Wind Blast support skill deal damage,
and while many projectiles are created, their damage is extremely weak.
The skill used to defeat the boss later on is flicker strike.