Tyreal’s Hilt, probably. I think.
Only 8,000 codes were originally printed. Don’t know if they ever gave them away again as rare gatcha prizes at Blizzcon like the bear.
the headless horseman mount dropped for me like 3 days after i bought the rooster.
Grove Warden Mount.
It should not be rare. It’s just a moose. Everyone should be able to get this thing, but they can not.
Not sure if its rare or not, but I still have my Light of Elune from original classic that I’m saving for just the right moment that will never arrive.
Also have Dartol’s Rod of Transformation. The rarest thing I have is probably the Bloodthirsty title.
I have my original commanders Black Warsteed which still to this day requires apprentice riding.