(Hey, it's easy to misremember that. Eve/Envy, and Envy sure sounds like the part who'd take away the diamond dust.)
"My apologies, I misremembered that. This is a lot of names to keep track of at once. A Deck of Many Things?" Obvious distate shows on Ashnar's face. "I'm not exactly fond of gambling to start with, and if even half of what I heard about those decks is true, I'd rather..." he stops himself. "But my philosophies aren't too important here. The important things now are the Tower and helping Tenebrynn."
Ashnar turns to his companions, and tiredly reiterates the options. "So, to be able to move significantly beyond the seal, we need to rest. Tenebrynn can't without significant aid. We don't have easy access to the longterm respite of stoneskin. We would either have to face Eve or open a path for her.
Polymorph is too shortlived to help alone. As far as I understand the matrices, depending on the imparted inertia, it would take twelve to 35 castings to keep him stable during his four hours of trance, a significant drain of aspects' resources, if they even have such resources and would be willing to use them for him. He is somewhat able to keep himself stable while awake, but he has lapsed, so means to keep him stable are important. We do have that elixir, which may help during the time that we rest.
Or Tenebrynn doesn't rest and uses those means to keep stable while we rest alone, which weakens our ability to move forwards. If Tenebrynn can feel a lapse coming up and warn about it, that might help a bit, with the aforementioned caveats. I suspect I missed some options, so if you can think of anything else."