Let's see which Nookie prefers.
Oh, I was thinking it'll be immune to entangling plants, not ALL entanglement. I'm not sure whether tol make these separate SQs or not, e.g.
Separate:
Freedom from Plants (Ex): A shroomling is immune to entanglement by plants, including plant monsters (such as an assassin vine) or magic that cause plants to entangle creatures (such as the Druid spell
entangle).
Woodland Stride (Ex): A shroomling may move through any sort of undergrowth (such as natural thorns, briars, overgrown areas, and similar terrain) at their normal speed and without taking damage or suffering any other impairment. However, thorns, briars, and overgrown areas that have been magically manipulated to impede motion still affect them.
Combined:
Woodland Freedom 1 (Ex): A shroomling may move through any sort of undergrowth (such as natural thorns, briars, overgrown areas, and similar terrain) at their normal speed and without taking damage or suffering any other impairment. However, thorns, briars, and overgrown areas that have been magically manipulated to impede motion still affect them. Furthermore, a shroomling is immune to entanglement by plants, including plant monsters (such as an assassin vine) or magic that cause plants to entangle creatures, such as the Druid spell
entangle.
Combined and Augmented:
Woodland Freedom 2 (Ex): A shroomling may move through any sort of undergrowth (such as natural thorns, briars, overgrown areas, and similar terrain) at their normal speed and without taking damage or suffering any other impairment. Furthermore, a shroomling is immune to entanglement by plants, including plant monsters (such as an assassin vine) or magic that cause plants to entangle creatures, such as the Druid spell
entangle. Brush and overgrown areas that has been magically manipulated to impede movement does not affect a shroomling so long as the effect does no damage. However, plants that are magically manipulated to injure creatures, or damaging plant spells such as
wall of thorns, do affect shroomlings normally, including impeding their movement.
A simpler but possibly more potent form would just crib off
freedom from movement.
Woodland Freedom 3 (Su): This works like the
freedom of movement spell, but only against effects that are plant-based (such as natural thorns, plant monsters, or plant-based magic like the Druid spell
entangle). Note that while this allows a shroomling to move normally through a
wall of thorns, they will still take damage.