I can't think of a good name

Alt Vine TF- Bunch o' Roots
Required stuff: Obsidian Vine leg TF event, Obsidian vines.
Note: The parser gives me a headache so for the sake of convenience I'll just be using generic descriptions for parts like "[butt]". Sorry. I am not a clever man.

(The actual event)
Something feels off with your [legs], as if they were just waking up. The feeling only gets worse after a few seconds of waiting, until you can't feel anything past your waist but a growing numbness. After the numbness completely overtakes everything from your [hips] down, the color begins to fade from them like dried and dying grass. To your horror, your legs begin to shrivel more and more, eventually taking on a fragile and dry state before crumbling to the flaky remains of what used to be your [leg]. You don't get much time to let the worry as something long and black bursts from your waist, followed by several more. They look like the same black vines that cover your body, but without the thorns, and in a much greater number, growing far too quickly and too numerous to count until what used to be your legs seems more like you've grown a miniature tentacle monster out of your pelvis! The pins-an-needles feeling of circulation returns, amplified by the considerably larger number of limbs "waking up", and are forced to wait it out for what feels like days. After a few minutes, the black color fades, and is replaced by the same [skin color] that covers the rest of your body.
Once you're sure that sensation's returned, you try to flex one of the vines specifically only to find that level of control difficult at best. However movement, and even steadying yourself on the writing mass to stand and "walk" comes naturally. A few moments of practice and you move with a natural sort of sway to your [hips]. [b]Your legs have been replaced by a wriggling mass of root-like tentacles[/b]

(Appearance)
From the waist down, your legs resemble a mass of [skin color] roots, covered in (bark, scales, fur) like the rest of you. (If "unbunched": They're easy to move around on, but fine control of each root is beyond you. However, should you want, you could bunch your roots together to resemble something like regular human legs.) (If "Bunched": While normally they'd be a writhing mass, your root legs are currently grouped up to resemble a relatively normal pair of human legs)

Note: I'm not sure if it'd make sense but the roots would also give players access to the Constrict move similar to having a naga body. Not sure, might be too much or not enough.