A tiny green tendril curls softly around his wrist where it's resting against the wood. Stiles takes shallow breaths, trying not to move or get too excited, but—it's working, he thinks. This is going to work

Magnus carefully releases the tight hold he has over his self-control and lets himself just feel. He lets go of Alec’s back, splaying his arms wide on the ground. He digs his fingers into the dirt, connecting to the earth. It hits him like a sledgehammer and he gasps. It’s a frantic sort of gasp, the kind that makes Alec stop and look at him. “Magnus?” Alec asks, searching the warlock’s face for any sign of things going bad. Magnus’ eyes are free of their glamour but they are… different. Still cat-like, but more green than gold, shining with magic and power hiding behind them.

Back at home, when he has time to examine it more closely, it quickly becomes obvious why this ritual never turned up in all his early research. It's not a typical soul summoning ritual. It's not a cultivation ritual at all; as Nie Huaisang puzzles through it, the closest category he can put it in is folk magic...not only that, but sex magic.

The resentful energy occupying Wei Wuxian's body like an enemy army is very interested in giving him Lan Wangji, tied up with a bow. Wei Wuxian is hoping that Lan Wangji (who is far too noble and very keen to save Wei Wuxian's misguided soul) doesn't find out about any aspect of that.