Eel Juice
Be very careful when handling this stuff; Eel Juice is a sticky, rather toxic liquid that also happens to be a room temperature superconductor. The species of eel that produces the juice is also an apex predator on its home dimension / planet / elemental plane, so getting the stuff isn’t exactly easy or cheap, either. But, hey: room temperature superconductor. That’s worth a lot of money, and if it can be synthesized (Eel Juice may be esoteric, but it’s not inscrutable) then the stuff will rapidly start being worth even more.
And wouldn’t you know it? There’s an auction taking place in two weeks for both a supply of Eel Juice, and an analysis of its chemical makeup and properties. The auction is, of course, on aggressively neutral ground, so a frontal assault is out — but that’s why they invented skulduggery. The team’s assignment is to get a copy of that analysis, at the absolute least. If that means going in halfsies with allies, friends, or even friendly enemies, fine. But if that can be avoided, well, it’s much more convenient to give a gift later than it is to share a resource now. But, again: get that analysis.
What’s that? Seriously? Of course there’s a casino on the site! The people auctioning off the Eel Juice aren’t amateurs.