The most fun I’ve had with the Tracker was with the Cult of the Wolf and Sticky Fingers passives and Tools of the Trade active (can’t remember what my other active treasure was, it wasn’t important though). Every chance I had, I took the Secret bucket (I think it’s called Trapper?). All I did was spam secrets every match, and eventually just overwhelm the monsters while they were struggling to do anything against the Secret control. Against Captain Shivers, I just got lucky when he played two Fel Reavers together for me to destroy his deck, and remove his Kingsbane so he couldn’t get it back.