Pathfinder 1e Monster / NPC: Rolling Cabbage

While still young, the blood-sucking cabbage appears to be a wild cabbage with six green outer leaves and assorted magenta inner leaves. It may be well-rooted in the ground. Or it may be uprooted in a mild breeze, whereupon it will roll across the grassland.

Eventually it will lodge against something ... suitable.

In its feeding phase, rows of tiny thorns like shark's teeth unfold from the lowest edges of the green leaves. Tightly coiled runner vines whip outward to latch onto the warm food source. A creature looking closely (within five feet or less) at the runner vines may notice that the vines are translucent; blood seems to course through them once they are fully unfurled. Four of the green leaves latch onto their prey, while the fifth and sixth reach up to stifle any carbon dioxide sources such as mouths or nostrils, or else stabilize the cabbage's position on the nearest inert surface.

No one has yet reported what a rolling cabbage looks like once it is full-grown