Skeleton Triggerman ability inverted

I can’t confirm 100%, but it seems like the ability for this creature works in reverse. I noticed enemy skeletons one-shotting my tank, and my own doing unusually high damage at random. I tested by hitting my own creature (for a consistent target), and hitting it near full health did far more damage (80-100) than at 1 HP (27); attacking low level enemies does over 1,000 damage! It seems the ability is causing +3% damage per 1% enemy HP -remaining-, instead of -missing-. Makes the creature pretty broken!