Paracosm
At this point, I'm literally nesting these layers three and four deep. I have one set of crystals -- and I do mean a set -- whose entire purpose is to purify the lab, establish aetheric tunnels with three public groves, and summons only those crystals from my private storehouse that I need for the second step. I don't even get to casting the actual spells I'm trying to cast until step two.