[1.2.397] Demon Slayer (3)

When/what patch was this?
(Also, it's only 50% of the attack, how would it do that?)

I don't remember. A few patches ago.

For Shadowers, Boomerang Step gave a 25% increase to all pre-fourth job skills, which made Shadow Partner also do 25% more damage. Add some % damage bonuses on your weapon and you have 100% damage or more, depending on how well you pull it off. Also, Assassinate, when fully charged, would make the Shadow Partner hits do way higher than the regular hits. Now that that has been removed, none of that is possible.