100% sure, I've done a lot of runs and everything I say is contrasted by that. Finding a pot on the same floor as the catalyst is pure luck, you'll check it by yourself once you've done enough runs

An alchemist pot will ALWAYS spawn between the third and fourth floor of every chapter. It might appear in every other floor, excluding multiples of five, 26 and 1. A magical catalyst will ALWAYS spawn in the first few floors, guessing 1-4. That's it, there's no more correlation. So, no, finding a magical catalyst does not guarantee a pot to spawn on the same floor.

Invis pot. There always is one if that room spawns

It's official, we indeed need 26 scrolls of magic mapping for perfect exploration score. Also, beta 5 is out, just to let ya know

Die til you don't :)

You can befriend a bee (it will follow you around and even go between floors with you) if you throw an elixir of honeyed healing. I thing Yog-Dzewa is an otherworldly demon that got the Yendor amulet and it uses it to grow in power with it. As the dwarf king says, it's power over this world is limited. Maybe it wants the amulet to conquer this dimension; is what I thing an otherworldly god that has limited power but can gain more with the amulet would try to do. Also, the dwarf king's mission as of right now is to stop Yog-Dzewa's minions from arising. And it's not like the king wants the amulet for just that, keeping Yog-Dzewa at bay, he uses it to controll the minds of the whole city. Probably they sent you down there to stop the dark magic from below, aka return the amulet of Yendor to the surface, as if not, its dark magic would probably start leaking onto the surface, and that'd be bad. I think that the amulet isn't the one that's resisting to be freed, I think it's Yog controlling the amulet the one that empowers the enemies and beckons them to you. But that's just my theory...

Update: killed it without a problem. It even gave me the 320 bestiary entries achievement. It had healing pot, sowilo scroll and some gold. Setup:

Ok, I see the problem. You were wearing a scale armor instead of a +11 scale armor

H O W- oh. Wand of blasting, I see

Same, but when multiple appear, or they shoot you off screen, or you just can't dodge it you just want them gone. Also, why a magic driven character has the most hp out of every enemy in the demon halls? And who does it have a (really big) damage reduction (yes, it is damage reduction, not defense, as magic attacks are also affected by it) when charging? I just hate that guy, so unfair most of the time

Na u actually can't but it might count as an enemy internally or smth dunno didn't check. Found it in the template, so put it in the best tier.

Go for corrosive almost ever. It's op if you know how to use it. I'd imbue it with your mage staff. The more max charges your corrosive wand can have, the better, and the staff gives you one more max charge on the wand you imbue. It deals so much damage and, as it is AOE, you can take multiple enemies at once. Takes some skill over how the gas expands (it expands differently in tunnels) and on when to use it, but if you know how, it is absolutely powerful and arguably the best staff (or the second best) in the game.