General

laser beam 5th job skills

Just take a look at this madness!
from OrangeMushroom blog

Mega Smasher: Collect energy to fire a powerful beam. [max level: 50]
Level 1: Consumes 1000 MP. Deals 405% damage 6 times on up to 15 enemies for up to 5 seconds, during which you are invincible. You can hold the key down to charge it, for every 5 seconds you charge the skill, the attack's duration will be extended by 1 second (up to a maximum of 5 seconds). While attacking, you can use the skill again to instantly cancel it. Cooldown: 150 seconds.
Level 50: Consumes 1000 MP. Deals 650% damage 6 times on up to 15 enemies for up to 5 seconds, during which you are invincible. You can hold the key down to charge it, for every 5 seconds you charge the skill, the attack's duration will be extended by 1 second (up to a maximum of 5 seconds). While attacking, you can use the skill again to instantly cancel it. Cooldown: 150 seconds.

https://youtu.be/rYdC0bzWvmA
and
http://tvpot.daum.net/v/v7ec0rfC9UzCmmN1rM9rCo9