With the release of the new Mordenkainen Presents: Monsters of the Multiverse, the revamped Fire Genasi trait "Reach to the Blaze" now allows the race access to the flame blade spell:

[...] Starting at 5th level, you can also cast the flame blade spell with this trait, without a material component. [...]

This made me think, if flame blade can be used with the paladin's Divine Smite feature, casting flame blade at 5th level with Divine Smite using a 5th-level spell slot will result in 4d6 fire damage and at least 5d8 radiant damage.

Does flame blade count as a melee weapon that can be used with Divine Smite?

  • 1
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    – Someone_Evil
    Jun 5, 2022 at 18:05
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    \$\begingroup\$ Slight aside but at 5th level the Paladin is just getting access to level 2 spell slots (different classes get spells at different rates so it isn't directly proportional to the level of the character) so you'd be looking at 3d8 radiant damage from a second level divine smite and 3d6 from the flame blade. \$\endgroup\$ Jun 6, 2022 at 13:44
  • \$\begingroup\$ The answer was no anyways, but the idea was that the character would have access to 2 5th level spell slots to do this which would be I think a level 12, with 2 levels in paladin and 10 levels in wizard. The fifth level thing was just when you start to get access with the flame blade. \$\endgroup\$
    – Shirofuji
    Jun 6, 2022 at 19:13

1 Answer 1



Generally, flame blade is not considered a weapon and so doesn't work with spells and features which require one, such as green flame blade or opportunity attacks.

For Divine Smite though there's an even more clear cut issue. Flame blade has you make a spell attack (emphasis added):

You can use your action to make a melee spell attack with the fiery blade.

and Divine Smite requires a weapon attack:

Starting at 2nd level, when you hit a creature with a melee weapon attack, you can expend one spell slot to deal radiant damage to the target, in addition to the weapon’s damage.

Thus this doesn't work without a DM overriding it (which is quite possible for flame blade).


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