*Concentration*10 Minutes

You create a wall of tough, pliable, tangled brush bristling with needle-sharp thorns. The wall appears within range on a solid surface and lasts for the duration. You choose to make the wall up to 60 feet long, 10 feet high, and 5 feet thick or a circle that has a 20-foot diameter and is up to 20 feet high and 5 feet thick. The wall blocks line of sight.

When the wall appears, each creature within its area must make a Dexterity saving throw. On a failed save, a creature takes 7d8 piercing damage, or half as much damage on a successful save.

A creature can move through the wall, albeit slowly and painfully. For every 1 foot a creature moves through the wall, it must spend 4 feet of movement. Furthermore, the first time a creature enters the wall on a turn or ends its turn there, the creature must make a Dexterity saving throw. It takes 7d8 slashing damage on a failed save, or half as much damage on a successful one.

**At Higher Levels.** When you cast this spell using a spell slot of 7th level or higher, both types of damage increase by 1d8 for each slot level above 6th.

Does it do magical piercing damage or nonmagical damage

Unless otherwise specifiedd, all spells deal magical damage.

Casting word is:

Spikus Transium

Magical piercing damage, and since the wall blocks line of sight, no chance of a spellcaster using "Misty Step" to bypass. Nice.

Does the wall have hit points? Could you cut your way through it or burn it down?

No I don't think you can because of the magic protection of the spell

Well if you poke yourself on a rose thorn it hurt because it poked you. If you walk through a rosebush then youâ€™ll still get hurt but the thorns are just brushing against you and not poking in deeply

Probably a silly question but:

Does a target within the 20ft radius of the wall take damage, or only if it touches the wall?

Also, getting creative: would it be allowed to entangle one of more targets in circular growth instead of creating a closed loop?

The circular wall is 5 feet thick and has a diameter of 20 feet. Is the diameter the internal diameter (meaning that there is a 20' diameter clearing inside), the external radius (meaning the whole wall fits within a 20'-diameter circle and the clearing inside is only 10' in diameter) or is the diameter in the middle of the wall, leaving 2.5' of thorns on either side of the diameter and a 7.5-foot radius circle of safety inside?

This is actually a really good question and it interests both the regular nerd and the Wall Spell enthusiast in me (personal favorite is Wall of Fire), so I wanna give my interpretation. For a straight line wall, you can choose to make it any length up to a maximum of 60 feet, while for a circular wall you can

onlymake a 20 foot diameter circle. I am assuming this is to prevent a circular wall from having a significantly greater total length than the longest possible straight wall, because if you calculate the circumference of the circular wall with C=2Ď€â€˘10, where r is the radius, you get a circumference of ~63 feet, which would be the true length of the circular wall if stretched out into a straight line. However, this only holds true if you take the 20 foot diameter to extend to the center of the 5 foot thick wall, corresponding to the third case you mentioned where the clearing inside has a radius of 7.5 feet.If instead you take the 20 foot diameter to be the distance between the inner edges of the wall, the true length of the wall becomes C=2Ď€â€˘12.5, which is ~78.5 feet long.

If the 20 foot diameter is between the outer edges of the wall, then the true length of the wall is C=2Ď€â€˘7.5, or ~47 feet.

Given the drastic increase and reduction in wall length that setting either the inner or outer edge of the wall as the edge of the 20 foot diameter circle produces, I would rule that the radius of the circle is the distance to the center of the 5 foot thick wall, so the clearing within the ring would only have a radius of 7.5 feet and a diameter of 15. (Conveniently, these dimensions would also prevent someone from using misty step to escape by teleporting 30 feet diagonally up over the wall. The longest line of sight path, teleporting from one end of the clearing over the opposite end of the ring, would only get you 18 feet of horizontal distance, so you would fall into a space 40% occupied by the wall and likely still take the damage from entering the wall's space)

What would a blight spell do to a wall of thorns?

It is my understanding that the wall of thorns continuously regrows its damaged parts as long as the spellcaster is concentrating on it. So any damaged vines, whether from fire or blight would be quickly replaced by healthy new growth. A DM might allow someone to pass through a damaged section before the spellcaster's next turn when the wall would rebuild itself over the hole.

Yeah. Right?! D-Door would do it but not Misty Step.