Orb of Corruption Ability Ignoring Techtree

[Melth]

So I want a unit to gain an ability based on Orb of Corruption (increases damage, enables your anti-air attack, and causes your attacks to decrease enemy armor) when upgraded.

The trouble is that the unit always has that ability even when it is un-upgraded. Techtree- Check Dependencies is of course set to true and the requirements are definitely correct. Nonetheless, the unit always has Orb of Corruption.

Any idea what causes this?

 

[sniper_zero]

It's because it's an item ability. I think you should use a dummy upgrade to give you a dummy passive.

Then use triggers to give units the Orb of Corruption ability.

 

[Melth]

Several other item abilities are working just fine with tech requirements as far as I can tell, so there must be some specific sub-category of item abilities it doesn't work with. I did think about the dummy upgrade option, but at the moment I'm mostly just curious about what causes this particular item ability to ignore tech-tree requirements.