I have never seen an interact-able spawn on stairs before, be it a well, shrine, or loot clicky. Also, I don't think this is even the right graphic for a well in Travincal?
I have never had an enigma before, and I only play offline. My luck is usually terrible with any drops, but I've been farming LK for a long time now trying to get the three Ber runes I need to make my Enigma to absolutely no luck (I'm a hair over 2,000 runs and I did find an Ohm, but that's the only thing of any note that has dropped).
Fortunately, I was made aware of a really cool program called D2R Marketplace that essentially lets you have a sort of simulation of trading for offline players. You feed it stuff from your shared stash and collect points that you can redeem for runes. You can define the worth of the items and the redeem price for runes to make it as close to online values as possible. 350ish P-gems, a few miscellaneous keys and a worldstone shard later and I finally have my hands on a Jah rune, for, as far as I can tell is a fair, albeit slightly good price.
Now all I need is a Ber, which I am still farming LK for, but the game is so much more exciting suddenly, because I see gems or essences or ubers keys now and I don't think "well that's not terribly useful to me". Instead it is 'oh, these have a little trade value! I'm inching closer to that Ber!" which is honestly kind of revitalizing. It's so cool that there's a fair system to actually get the rues that feel unattainable offline, just like online has. I am the most excited I've been about the game in years now that I have 2/3rds of my Enigma. I can finally build a really good summon necro like I always wanted to!