Just import via WE importer
First u go here:
Attachment Points
First way:
Then you go to special effects in triggers, and choose the one that says:
Special Effect - Create special effect on a unit
Then you change the fields to what u need them to be:
Special Effect - Create a special effect attached to the
hand left of
(Unit) using
weapon\sword1.mdx
OR
Second way:
Go to abilities section, and choose new custom ability.
Pick the item ability called: Shadow Orb Ability
Then just change the attachment to:
weapon\sword1.mdx and the attachment point to:
hand left.
Give the ability a name, and give it to the unit you want to have it.