ER"So, can it move the plants, or not?" Snowy says, backing up to give Misty space. He rather wanted to grab the scroll and try...something, some magical manipulation, but if Rhapsody was this visibly perturbed by the scroll, that was reasonable cause for alarm and caution.
Rhapsody looks over to Snowy, she had mostly regained her sense of composure, but deep down she was still kinda disturbed by this. "The wand has control over plants, so yes it could move them, and potentially a whole lot more. This whole swamp could be a result of its power. The first expedition we were on was to retrieve a wand that created ice and snow, and was doing so... in overdrive, in part thanks to COIN efforts to retrieve it which put it on the defensive." She states, trying to keep the summery simple and concise. "It was amassing a killer snow storm. As soon as somepony grabbed it though, it 'stopped'... technically." That was when she heard the others...
Misty seems confused. "Wand? I don't see a wand?"
"I don't either, weird. Do...do you think somepony found this before us?"
Once more all color seemed to drain from her face and she shook her head. "What? The wand isn't with the scroll?" She asks having not realized the scroll was all that was in there. "Luna buck me sideways..." She says with a huff and looks to the others. "That would be bad; VERY VERY VERY VERY bad. The wand of the North has a will of its own, it can control anypony that isn't focused enough to control it. A former teammate of ours would have been mind controlled by the wand if I hadn't snapped her out of it with one of my songs." She states taking a deep breath, trying to keep calm and focused... but deep down she was now kinda scared of the thought that the wand had likely unwilling avatar. "This wand, likely also has the same kind of will power. If somepony else got a hold of it, and were weak willed or just not focused... well... they're likely just a meatpuppet for whatever the wand's desires are. I really don't want to find out what that kind of power would do..."
Maple twists and turns, seemingly unable to to get any traction from her rear hooves. The frustration finally overwhelms her and she starts vibrating with rage.
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ZAM
Maple slides out easy as if there was nothing actually holding her the entire time... fortunately the only one around to see her look and feel like an idiot is herself.
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Refocusing that energy Maple calls out to the one pony able to aid her in an attempt to get back to the others.
"MISTER SIGNAL TURN ON THE BEACON!!!" Maple just hoped the colt hadn't been squashed and could still work his machine.
"Think it's got something to do with those vines?" Misty asks.
Snowy has the general gist of Rhapsody's moderately horrific piece of information. Namely, the scroll itself is not dangerous. "Probably, yes." He says in reply to Misty. "Try chilling them down, and we'll see if we can bust through them." He picks up the scroll in one hoof, trying something he hasn't attempted in a very long time. For most unicorns, the magical nature of a bespelled object can be sensed by suffusing the object with your magic, rather like one can identify unobtrusive jewelry through a tight hug. Unlike a hug, this also tended to be the easiest way to activate or use a magical object. Snowy had had little use for the ability over the years, but that didn't mean he was incapable of it, a fact that he was suddenly eternally grateful for...
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Try as he might, Snowy Skies couldn't sense anything through the scroll other than the fact that it had previously been in the presence of something magical. Just then, Anchors Away interrupted his train of thought with, "Snowy, do you need to see where you put an illusion? Can you, like, guess?"
Snowy puts the scroll back in the case, happy to be discussing an arcane topic he was more familiar with. "...I suppose. It tends to result in bad form, because the illusion can only react to what I can sense. So it certainly won't fool anyone. But," He continues, finally (he hopes) catching on. "A signal to those outside should be feasible. Suggestions?"
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Thinking out loud, Anchors Away rubbed her hooves together. "Well...what if the way out can be given to us? If something 'escapes', whatever is controlling the vines might direct its attention elsewhere. That can lead to either it opening this place up or maybe just making it so we don't get a face-ful of plant when we break the frozen vines. Or...I don't know. It feels like a long shot when I say it out loud."
With the others safely away from the vines, Misty decides to give Anchors' suggestion a go.
"Alright... here we go. Time to chill!"
She does her best to draw together the moisture from the cave air and push it toward the vines, then cool the air near the vines as much as possible. The supercooled water vapor would then crystallize and form ice on the vines.
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Rhapsody suddenly had an odd idea and trots over to Snowy. "Misty's doing a cold thing, we're dealing with another wand... if I could describe the wand of the North to you, do you think you could project that? Make whatever might have the Wand of plants think we have its sister with us? Least for a short term thing?"