I feel like I’m missing something, since I don’t see any other posts about this. I got the escalating NMD sigils from Mrak. I did notice they only have one affix on them, whereas I’ve seen screenshots where they should have 3. If I use it and clear the dungeon, that pillar appears. I click on it and it does the teleporting animation. A small portal appears, but then nothing happens. I can keep clicking on the pillar and it replays the animation, but I can never progress.
I thought I would try to get a sigil drop from a horadric strongroom, but I’ve done probably 5 or 6 of them without seeing an escalating sigil drop.