Raging Spirit damage

Hi,

the skill Raging Spirit really confuses me. For me it has no damage number shown in the skill screen. The gem talks about them doing Attack damage. When they attack enemies, it looks like 0 dmg, but hard to tell.

Is the skill not working with Staves because they use the weapon attack stats? Is it a bug? What am I missing?

Cheers.

you need to summon a few first

I summon ~20 skulls and I am still not sure what kind of or if any damage.

Raging spirit is a minion, they won't do much damage if you have no minion damage mod.