Do we have to /claim it before the end of the 20th, or is the time limit just to log in and have it appear on /claim list? I'd like to save it for new TLP maybe.
Not sure if it will show up on a specific TLP list (it should but I don't TLP), but you do not have to /claim it before the 20th. Just make sure it's in your /claim before then. Hit the Refresh button if you need. The description I have for it is A Goblet of Adventure II as a special gift to celebrate the 25th anniversary.
I still have my goblets from 22nd anniversary and expansions in my claims. I forget if it was available for me to claim when I was on Oakwynd.
So 25th anni goblet of adventure is 25% bonus for 8 hours. does this get overwritten if you click LoTD?