# How much damage does a creature take for spending its entire turn inside a Wall of Fire?

The conditions for when wall of fire deals damage, after the initial casting, are as follows (emphasis mine):

One side of the wall, selected by you when you cast this spell, deals 5d8 fire damage to each creature that ends its turn within 10 feet of that side or inside the wall. A creature takes the same damage when it enters the wall for the first time on a turn or ends its turn there. The other side of the wall deals no damage.

This is a bit confusing, because it seems like there might be two separate effects that can each deal damage to a creature that ends its turn inside the wall itself. Specifically, if the creature starts its turn inside the wall and remains in the wall for its entire turn, it looks like both effects would trigger at the end of its turn, dealing a total of 10d8 fire damage. (It also looks like a creature that enters the wall on its turn and remains there might take 10d8 total, but not all at the same time.)

Is this intended to deal double damage to a creature that spends its entire turn in the wall, or is the wording simply a bit redundant? How much damage does a creature take if it spends its entire turn inside the wall of fire?

• Do you mean in addition to the 5d8 fire damage it would have already taken on a failed DEX save when the wall was first created? Because if the creature fails to move out of the wall during its turn, it will receive a second dose of damage. Commented Jan 9, 2019 at 23:07
• @RichardSmith I'm only asking about damage the creature takes on its own turn, not the damage that happens upon the initial casting of the spell. (Let's assume the caster is smart enough not to stand in their own wall, so the initial damage isn't happening on the creature's own turn.) Commented Jan 9, 2019 at 23:11
• Commented Sep 8, 2022 at 16:56

There's several different ways this can play out. I've drawn the following diagram to help make sense of this:

• A: The "Safe" side of the wall; no one takes damage here
• B: The Wall itself, 1' thick.
• C: The 10' field in "front" of the wall
• D: Beyond the limits of the wall; no one takes damage here

Based on how a character acts, they might or might not take a certain amount of damage.

## Character at B when wall appears: 5d8 (DEX Save for Half) during the caster's turn

When the wall appears, each creature within its area must make a Dexterity saving throw. On a failed save, a creature takes 5d8 fire damage, or half as much damage on a successful save.

Wall of Fire, Player's Handbook, pg. 285

## Character stands in B through the entire duration of their turn: 5d8+5d8 at the end of their turn

One side of the wall, selected by you when you cast this spell, deals 5d8 fire damage to each creature that ends its turn within 10 feet of that side or inside the wall. A creature takes the same damage when it enters the wall for the first time on a turn or ends its turn there. The other side of the wall deals no damage.

Wall of Fire, Player's Handbook, pg. 285

This needs to be closely examined. Per the RAW, the damage is listed twice. So this damage must occur twice. This might be an oversight/mistake in the spell description, but that is what it says it does.

As DM, I'd probably only use one source of fire damage at the end of the turn, given that I very strongly believe that this is a mistake/not the Rules as Intended. But that would not be a Rules-as-Written ruling.

## Character moves from A to B: 5d8 when they enter, 5d8+5d8 when their turn ends

One side of the wall, selected by you when you cast this spell, deals 5d8 fire damage to each creature that ends its turn within 10 feet of that side or inside the wall. A creature takes the same damage when it enters the wall for the first time on a turn or ends its turn there. The other side of the wall deals no damage.

Wall of Fire, Player's Handbook, pg. 285

As established previously, stopping the turn at B results in two sources of 5d8 damage. The only thing new is the additional damage from entering the wall.

## Character moves from B to C: 5d8 damage when their turn ends

One side of the wall, selected by you when you cast this spell, deals 5d8 fire damage to each creature that ends its turn within 10 feet of that side or inside the wall. A creature takes the same damage when it enters the wall for the first time on a turn or ends its turn there. The other side of the wall deals no damage.

Wall of Fire, Player's Handbook, pg. 285

## Character moves from A to C: 5d8 damage when they enter the wall, 5d8 when their turn ends

One side of the wall, selected by you when you cast this spell, deals 5d8 fire damage to each creature that ends its turn within 10 feet of that side or inside the wall. A creature takes the same damage when it enters the wall for the first time on a turn or ends its turn there. The other side of the wall deals no damage.

Wall of Fire, Player's Handbook, pg. 285

## Character moves from A to D: 5d8 damage when they enter the wall

One side of the wall, selected by you when you cast this spell, deals 5d8 fire damage to each creature that ends its turn within 10 feet of that side or inside the wall. A creature takes the same damage when it enters the wall for the first time on a turn or ends its turn there. The other side of the wall deals no damage.

Wall of Fire, Player's Handbook, pg. 285

## Character moves from B to D: no damage

You didn't "enter" B, and there's no damage for "Entering" C, so ultimately, no damage is issued.

## Character moves from C to B: 5d8 damage from entering the wall, 5d8 at the end of turn

Same as moving from A to B.

## Other combinations

As far as I can tell, there's nothing surprising in any other set of movements. The rules for "entering" a zone only apply to B, and the direction otherwise doesn't matter. The rules for "ending turn" in a zone apply to both B and C, with slightly variant rules; but the order of entry doesn't matter for those rules.

• What do you think of the argument that "same damage" means those two ways to take damage don't stack since they are the same source? Commented Apr 23, 2019 at 1:27

# It takes 5d8 damage total.

On its turn in initiative, a creature starting its turn in the wall does not take damage. Doing actions in it does not cause the creature to take damage. Ending its turn in the wall deals 5d8 damage.

Therefore, 5d8 damage is dealt to a creature that spends its entire turn in the Wall of Fire.

The sentence structure of the spell - two separate sentences saying that a creature ending its turn in the wall takes the same 5d8 damage - is redundant. Otherwise the spell would be re-written as, "A creature entering the wall takes 5d8 damage. A creature ending its turn in the wall takes 10d8 damage."

• What about the fact that two separate sentences in the spell both say that the creature takes 5d8 damage at the end of its turn? Commented Jan 9, 2019 at 23:19
• Please put clarifications into the post rather than just in comments. Commented Jan 9, 2019 at 23:23
• @ThomasMundane I don't think there's a need to quote my comment in your answer. My comment is just restating part of the question above. Commented Jan 9, 2019 at 23:48
• Not sure under which basis you claim part of the sentence is "redundant". Multiple sentences imply multiple effects. If one sentences says you take 5d6 damage and the next says you take 5d6, you take 10d6. Commented Apr 20, 2019 at 0:26
• They key term in the phrase that makes it redundant is "same" damage. It's their way of explaining that you only get damaged from that particular source once, regardless of which of the two possible triggers activates the damage effect, entering the wall for the first time OR ending your turn there. It doesn't stack (unless you're the DM and you want it to), it's not written that way nor is it intended that way. Commented Apr 22, 2019 at 18:21

There's a few spells with wording like this; Moonbeam has some janky stuff like that as well. If you logic it out, it's actually specifically designed to prevent a creature from taking damage from that source more than once in a round - in Moonbeam's case because that spell lets you move the beam over an enemy, in both spells' cases because someone might throw a creature into the effect while it's not the creature's turn.

The "On a creature that ends its turn" bit really ought to come after the "...enters the wall for the first time on a turn..." bit, because it's that second bit that gives the relevant information. It's the "OR" that's important here, because without that, you'd get exactly the situation you describe. But with the Or, it becomes:

if (creatureInRangeEndofTurn=True)||(creatureInRangeMoved=True)
Damage=5d8
;
return 0;


if (creatureInRangeEndofTurn=True)
Damage=5d8
;

if (creatureInRangeMoved=True)
Damage=5d8
;
return 0;


The first bit is really the redundant part.

• I don't think moonbeam is a good comparison. Moonbeam uses the fairly standard phrasing of "enters the spell's area for the first time on a turn or starts its turn there", while the phrasing in wall of fire is quite a bit more complex. Commented Jan 10, 2019 at 1:55
• Welcome to RPG.SE! Take the tour if you haven't already. Commented Jan 10, 2019 at 4:07
• Welcome to the club and thank you for the input!. I actually like this answer very much. As a computer engineer, this is exactly what I had in mind, but didn't want to throw it out there for fear of being ridiculed for it. bravo for being the brave one ;-) As a side note, I'd slightly adapt the damage in your answer from 5d6 to 5d8's to be consistent with the question. Just a suggestion though :-) Commented Jan 10, 2019 at 19:13

## By RAW, 15d6

One side of the wall [...] deals 5d8 fire damage to each creature that ends its turn within 10 feet of that side [...].

The inside of the wall is withing 10 feet of the side, so this part of the spell does 5d8 damage. Additionally,

One side of the wall [...] deals 5d8 fire damage to each creature that ends its turn [...] inside the wall.

Since that condition is satisfied, that's an extra 5d8 damage.

A creature takes the same damage when [...] it ends its turn [in the wall].

Same damage means 5d8. And 5d8 + 5d8 + 5d8 = 16d8.

• By this logic, being 9 feet away from the other side of the wall would put you within 10 feet of the "hot" side and subject you to the damage (the wall is 1 foot thick). I'm pretty sure that's not the intended reading of the spell. Commented Apr 20, 2019 at 5:20
• @RyanThompson I agree it isn't RAI, but I gave a RAW answer here. Commented Apr 20, 2019 at 5:31
• @Merudo Is that actually how you'd rule on this, as a DM? Commented Apr 22, 2019 at 21:58