" You weren't kidding when you said they were illusionists "

Jo and Dean's feet crunched along the dead leaves, both of them holding guns out in front of them.
The warehouse towered above them, casting a big shadow over the front of it.
As they walked, a thin line was visible where the dead leaves no longer covered the ground. Just as Dean went to step over it, Jo shouted, moving her hands out in front of him.
"Dean!" She jumped, pushing him away. He stumbled back, not crossing the line.
"What is it?" He growled, taking Jo's hand that she extended for him. She helped him up.
As they stood, staring at the line- it became evidently clear that something was up. Leaves don't just stop moving against the wind. It was like there was some sort of barrier blocking them.
Jo bent down, picking up an acorn. She held it in her hand for a second before tossing it over the line. As if there were an invisible electric fence, the accord bounced off the air and sizzled, returning to the ground burnt and charcoaled.
"Holy hell. It's some kind of wall." Dean remarked.
Jo sighed, backing away.
"It's an illusion. Who knows if there even is an abandoned warehouse behind it." She muttered to herself.
Dean nodded, walking along the line of where the leaves stopped.
"Then there has to be another way in." He said aloud. Jo followed him around the perimeter, the two of them spotting a space where the leaves drifted in normally as they should. A part where the line of the wall was broken.
She growled, bracing herself before stepping in.

As if she had been swallowed into a black-hole, Jo disappeared into the imaginary wall.
"Oh brother." Dean muttered to himself, before taking a deep breath and following in after Jo.

As he entered, what once looked like an abandoned warehouse morphed into a neat house. The leaf covered concrete morphed into bright green grass.
"You weren't kidding when you said they were illusionists." Dean stated. Jo nodded.
"Keep an eye out. There's bound to be more traps around here." She analysed the house as they approached it. There was a tiny door underneath the stairs, which looked fine. The front door, however, glistened slightly.
"The front door isn't a front door." Dean gulped, watching it glisten. "That's got to be an illusion as well."
Jo smirked at Dean, impressed with him. She then turned, glaring at the door- and as she stared at it more, it became visible that it was in fact an illusion. The more she believed that the door wasn't a door, the white wooden door faded and was replaced with two dozen thin wires sparking with electricity.
"See that?" She hissed. Dean squinted his eyes.
"Yeah, I see that."
Dean glanced at the tiny door underneath the stairs.
"That's got to be it."
So the two of them creeped, then, as Dean got closer, he booted the door and it came swinging open. He crawled inside, and as the two of them began crawling, the space for the door seemed to get darker, smaller and longer.
"I can't go any further. It's too small." Dean grunted.
Jo stopped, staring at the wall around her. It seemed to be moving in on them- closing the space.
"Dean!" She exclaimed, "It's not real. It can't be."
As the words left her mouth, the crawl space disappeared. It morphed into a room- a big one- and the two of them were just crawling along the floor.
Dean and Jo stood up, creasing their brows in unison.
Jo looked around, looking at all the symbols etched on the walls.
"They're not here." She muttered, grazing her fingers along the symbol closest to her.
"What?" Dean questioned, watching Jo.
"These symbols are giant magic radiators. To be able to create all the illusions in this house would take a lot of magic- but you know gas-pipes? What goes in must come out...and this is just the out."
Dean stared at Jo blankly.
"Come again?"
"Wherever the witches are, the same symbols are carved. These symbols take magic from around them and suck it out to wherever the matching symbols are carved. Which is here. The symbols take magic from the witches around them so it can come out here and cause all of these illusions."
Dean creased his brows.
"So you're saying, Sam and Sunny or Bobby just walked into a room of symbols and angry witches?" Dean clarified.
Jo gulped, nodding her head.
"Yeah. That's exactly what I'm saying."
"So what do we do?"
"Well, we could go- but that's going to be tricky since there are still two places to search...so I have an idea."
"Spit it out." Dean coerced. Jo smiled smugly.
"I think I know a way to use these symbols to flick the switch and suck all the magic out of those witch bitches."