Shalazam

I agree

I am convinced that uncommon horses can not have a will less than 6. Going off of mine and brothers MANY uncommon horse pulls, 100% of them have been 6-9 will. I think it's 1-5 is common, 6-9 is uncommon, 9+ is rare.

He summons a group of adds, prioritize the iron willed and mez the rest during wave 1, Wave 2 same thing, wave 3 mez everything and kill Leonus. Put a pet on an iron willed or prioritize as necessary after Leonus comes down the stairs during wave 3

Does this mob still spawn?

Killed him 5 times, got necklace, staff, axe, and earing. Around 2 hours.