Venom's Brambletangle

This dragon-only spell has been used to great effect by the progeny of Venominhandar and his mate since their deaths prior the erection of the Standing Stone. By means of this spell, the spellcaster transforms a region of briars and/or brambles into a densely tangled and thorny coppice through which movement is nearly impossible. Within the area of effect of Venom's brambletangle, creatures of large or greater size cannot pass without suffering 1d8 points of damage per round or move at a rate greater than MR 1 (or 10 yards per round, if distance is calculated in more easily in that fashion in a particular instance) without some form of magical protection or facilitation.

Man-sized and small creatures cannot move at a rate greater than MR 1 (or 10 yards per round, if distance is calculated in more easily in that fashion in a particular instance) without taking damage unless using some form of magical protection or facilitation. Such creatures can choose to move at a rate of up to half their normal movement rate, but they suffer 1d6 points of damage per round if they do so.

Tiny creatures can move at a rate of up to half their normal movement rate without taking any damage if they use some form of magical protection or facilitation. If they choose to move at their normal movement rate, however, they take 1d4 points of damage per round.