105 Solo Mage, Silver
I was lucky that this weed was already spawned, so no idea how rare.
Not a difficult mob in itself but the surrounding area is quite tricky because mobs broadcast an AE snare which will also drop your invis, even superior invis like Worlu. Combine that with the obscuring roots and this is not the sort of area you want to stay in longer than necessary.
The snare will even get you as you zone out of East.