Can't find a stat filter on the PoE trade site...

I am looking at an item which appears in a PoB build I'm using (a cluster jewel - Viper Joy) which has, as one of the affixes, "Added small passive skills grant: Minions deal 10% increased damage".

When I look on PoE trade site (www.pathofexile/trade), I don't see this skill listed under the stat filters.

I think the PoB build was posted last fall.

Just wondering, is that stat no longer offered, or does the site just not offer that filter for some reason?

Thanks! I didn't know to look for the "Enchant" group of stats.

Does this mean the property/stat/affix/whatever you call it was added by a player?

I think this is just how it is for cluster jewels, which makes them hard to search for if you don't know. On other items in many cases the enchant may have been added by a player or found with an enchant. Harvest crafting and heist enchants are some examples. Anointments also count as enchants.