If I have both the Flames of Phlegethos feat and the sorcerer's Metamagic option Empowered Spell, can I re-roll the same die twice?

The description of the second benefit of the Flames of Phlegethos tiefling racial feat says (XGtE, p. 74):

When you roll fire damage for a spell you cast, you can reroll any roll of 1 on the fire damage dice, but you must use the new roll, even if it is another 1.

The description of the sorcerer's Metamagic option Empowered Spell reads (PHB, p. 102):

When you roll damage for a spell, you can spend 1 sorcery point to reroll a number of the damage dice up to your Charisma modifier (minimum of one). You must use the new rolls.

You can use Empowered Spell even if you have already used a different Metamagic option during the casting of the spell.

Can you re-roll the same die with both features, or only once? That is, if you re-roll a die with one of these abilities, does the other ability let you re-roll it?

The "You must use the new roll" makes it sound like you cannot, but in general abilities can can override how other abilities work. Is the "keeping the new roll" restriction limited to re-rolls from that ability, or does it apply to all re-rolls from any source?

There is another interpretation of "You must use the new roll." There is a feat called Savage Attacker which reads:

Once per turn when you roll damage for a melee weapon attack, you can reroll the weapon’s damage dice and use either total.

If you compare this to the language in the previous two abilities, you see that the "re-roll and must use the new roll" could be viewed as the alternate to "re-roll and use either roll", and therefore imposes no restriction on other features re-rolling the die.


2 Answers 2


I believe that in both cases, the "you must use the new roll" should be interpreted only within the context of the effect itself. That is to say, the intent is that the Flames of Phlegethos effect can only reroll a given die once; you don't get to keep rerolling 1s until you come up with something that isn't a 1. But then once all that rerolling is done, you can decide to activate Empowered Spell and start a new round of rerolling under new rules, including additional rerolls of any dice you may have already rerolled with Flames.

However, I would say you need to fully resolve one of the effects before you start in with the other one. If you rolled a 1, then used Flames to reroll it and came up with a 2, then decided to activate Empowered Spell, and upon rerolling your 2, got a 1 again, you couldn't then go back and claim another Flames reroll. You've already resolved that effect.

  • \$\begingroup\$ But by the interpretation in your answer, there is nothing stating that you cannot re-roll any 1's achieved from Empowered Spell with Flames of Phlegethos. If the essence of "you must use the new roll" does not restrict the doubling of usage of abilities on the first roll, there is really nothing saying you can't use Flames of Phlegethos again upon rolling a 1 after using Empowered Spell, it is, after all, a damage roll for a spell. \$\endgroup\$ Commented Oct 6, 2020 at 5:08
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    \$\begingroup\$ I don't understand what you're saying. You can't go back and re-use a power you've already resolved. Once you use Flames on a damage roll, you've used it on that damage roll, and any rerolling you gain from another source can't then have Flames applied to it because that effect has already finished. That's the whole point I was making in the second paragraph. \$\endgroup\$ Commented Oct 6, 2020 at 13:56
  • \$\begingroup\$ Your answer is largely based on the assumption of intent was my point. There is nothing in the question or your answer referencing rules that state you may not utilize an ability, trait, feat, etc more than once, so I'd recommend citing something of that nature for your question. The text merely states, "when you make a damage roll", not "once per casting of a spell" or "once per turn", etc. Also, I wasn't disagreeing with your answer, more-so your logic as to how you arrived to it, which you can see in my answer below. \$\endgroup\$ Commented Oct 7, 2020 at 5:26
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    \$\begingroup\$ @HeWhoRulesAsIntended The die is locked in from the perspective of Flames once you've rerolled it one time. The fact that another effect later lets you reroll that die again doesn't undo the fact that Flames has had its chance already. You can't come back and roll again because "you must use the new roll". \$\endgroup\$ Commented Oct 8, 2020 at 21:26

You may use both abilities for the damage roll, but not together on any dice affected by the other ability.

Both abilities explicitly state, "you must use the new roll."

RAW (Rules As Written), this is pretty straightforward. Whatever you roll on the re-roll, you must use it. This means if you roll a 1 on a fire damage die and use Flames of Phlegethos to re-roll it, you may not use any other re-roll abilities on this specific die because "you must use the new roll" of the fire damage die. This would also apply to the use of Empowered Spell being used first, then wishing to utilize Flames of Phlegethos afterward.

You may use both during the same spell damage roll, but not together on any dice. As in, you may re-roll any fire damage rolls of 1 with Flames of Phlegethos, and any other damage die with Empowered Spell, but you may not use Empowered Spell on any dice you re-rolled using Flames of Phlegethos, and you may not use Flames of Phlegethos to re-roll any dice you used Empowered Spell on.


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