So my Celestial Warlock just hit level 6 and gained the Radiant Soul feature:

Starting at 6th level, your link to the Celestial allows you to serve as a conduit for radiant energy. You have resistance to radiant damage, and when you cast a spell that deals radiant or fire damage, you add your Charisma modifier to one radiant or fire damage roll of that spell against one of its targets.

I'm having trouble finding Warlock spells that do Fire or Radiant damage, though. Hellish Rebuke (which doesn't really mesh well with the Celestial theme) on the Warlock spell list (PHB) and Guiding Bolt, Flaming Sphere and Flame Strike from the expanded spell list.

Am I missing something, or is this ability just not terribly useful? Does this ability come online later, with Mystic Arcanum?


There are 18, 9 of them are not in the PHB, and 3 are available only through Pact of the Tome.

This DnDBeyond search shows several on the Warlock spell list:

And on the Celestial Warlock's expanded list:

Notably, there is only one spell on the generic warlock spell list in the Player's Handbook. Eight more spells are added in Xanathar's Guide to Everything, and Tasha's Cauldron of Everything.

Available only through Pact of the Tome:

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    \$\begingroup\$ seems to me like it's a minor buff to level 1+ spells, and it makes cantrips a little better if you for some reason can't / won't use Eldritch Blast, for example if your target has cover (-> sacred flame). \$\endgroup\$ – PixelMaster Jan 7 at 15:55
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    \$\begingroup\$ @PixelMaster my celestial warlock (currently level 8 and waiting for the campaign to resume when the DM recovers from a RL inflicted delay) has found it to be exaclty that: a modest boost and situationally useful. \$\endgroup\$ – KorvinStarmast Jan 7 at 16:03
  • \$\begingroup\$ @PixelMaster Or if you're fighting zombies/other undead who happen to be weak to radiant damage. \$\endgroup\$ – RevenantBacon Jan 7 at 20:07

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