Deep Magic Volume 2 (p.217)
Seeking Fire
2-level Divination
Casting Time: 1 action
Range/Area: Self (15 ft. radius)
Components: Verbal, Somatic
Duration: Instant
Attack/Save: DEX Save
Damage/Effect: Fire
A wave of seeking fire rolls out from you in a 15-foot radius. Each hostile creature in the area that is hidden or invisible and not behind total cover must make a Dexterity saving throw. On a failed save, a creature takes 2d4 fire damage, is revealed, and can’t benefit from being invisible until the end of its next turn. On a successful save, a creature takes half the damage and isn’t revealed.
At higher levels: When you cast this spell using a spell slot of 4th level or higher, the radius increases by 5 feet for every two slot levels above 2nd.
Available for: Sorcerer, Warlock, Wizard