The Sanctuary of the Incoherent Stairs of Empty Might is a place in the Deep Void where stairs make audible noises, which vaguely sounds like a language but is just gibberish. There's a man in red and blue performing a strange action that looks like he's being a shrimp on the stairs. On closer inspection, that's Super Duper Gosh Dang Mario 64 performing a Backwards Long Jump (BLJ) on the stairs while rapidly saying 'Yahoo!'

Your thoughts are interrupted by the smol purple lizard who owns the place.
"Oh pay him no mind, Mario just does that. Aaaanyways you're probably here because you want to trade stuff with me, I'm down for it. I'll put some items in here and you can either swap them with something else, or buy it outright. If there's a specific item you're looking for then ask me in Dopcord, I might have what you need."

"Oh before I forget, if you've just arrived here from the September 24th through Oct 4th registration window please send me a trade request for 5 Tea Sets. You can give me whatever you feel like for the exchange, unless you'd rather pay 100 Dopcoins instead."