Nail said:
Hmm. I'd be more "tempted" by a Ref save for no damage.
Anyway, I looked over Wall of Thorns, 5th level druid spell. It might be comparable too.
After reading it just now it *is* very comparable...to the description I reiterated above. If you're bulling your way through a
Wall of Thorns you don't get Dexterity & Dodge bonuses to your AC, and there's no Saving Throw.
Similarly, if you've been totally covered with thorny vines (as
Briar Web describes), you really shouldn't escape unscathed (unless you've got DR able to absorb all the damage) if you decide to swing your weapon, jump up & down, or move around. You can do it carefully, while trying to avoid those sharp, pointy spines, and take less damage (with a Reflex half save).
Under the spell's original effects a successful Reflex Save keeps targets from being entangled. With your proposed radius reduction by half to 20' a target affected dead center only has to move 20' to get out of the effect. Since the spell reduces movement by half, and that as a full round action, most targets who succeed at their Reflex save will be out in 2 rounds (and enjoy a cover bonus from the spell during the 1st round).
Allowing a successful Reflex save to also avoid ALL damage means on the first turn those that save will not take any damage and can use their turn to move to the edge of the spell effect (or out of it if they weren't dead center to begin with and/or have a 40' base speed). On their second turn pretty much all targets will be free if they make their Reflex save.
So, let me ask you, if someone makes their Reflex save both times and takes no damage whatsoever, what's better about
Briar Web over
Entangle? Why would Rowan spend a 2nd level slot again?
At least with Reflex half on the 1d4 damage (incurred for all actions, like the original spell describes), anyone who made their Reflex save would incur 2-4 points of damage. Not a lot to most but still significant to Nail's basic Goblins (and a reason for Rowan to consider taking
Briar Web over
Entangle).
Thanks.
DrSpunj