Creating the Ink

We need a way to create an artificial nexus at your tower. I know where we can get the conduit to do that, but it's well-guarded. We need to keep our cool and do this the right way. I have a plan - a scroll of mass teleportation. The fungal giants and shamblers down below are covered with pustules full of an oily substance. We can use the oil to craft a makeshift ink substitute for the scroll.