pf2e.fyi
From Pathfinder Kingmaker, which isn't enabled.

Blazing Blade

SPELL 2
Traditions divine, primal
Cast
Duration 1 minute

A scimitar-shaped beam of fiery light springs from your free hand. While the spell lasts, you can use a single action, which has the attack and concentrate traits, to burn your foes with the blazing blade. When you do, make a spell attack roll. On a success, the blazing blade deals 1d6 fire damage plus 1d6 spirit damage plus your spellcasting ability modifier. On a critical success, it deals double the usual damage.


Heightened (4th) The blade's fire damage increases to 2d6. On a critical success, the target takes (3 if the item's level is at least 8, otherwise 2 if the item's level is at least 6, otherwise 1)d6 persistent spirit damage.
Heightened (6th) The blade's fire damage increases to 3d6. On a critical success, the target takes 2d6 persistent spirit damage.
Heightened (8th) The blade's fire damage increases to 4d6. On a critical success, the target takes 3d6 persistent spirit damage.
Pathfinder KingmakerOGL