What am I doing wrong here? It’s taking me a disproportionately long time to earn this Mastery. I’ve completed Web Snare, almost finished Mimic, and am doing fine with Spider Trap, but for whatever reason I get less than 10 points a match for Acid Spit. What exactly triggers this mastery? I’ve elited all the other monsters, have to complete the set.
EDIT: Should mention I’m at 3 star mastery here, if that wasn’t obvious.