Firther's Shadow

3rd-level enchantment

Casting Time: 1 action
Range: 90 feet
Components: V, S
Duration: Concentration, up to 1 minute
Class: Sorcerer, Warlock, Wizard

You warp and distort the memories of a creature you can see within range, bringing forth hideous and disturbing mental images. The creature must make an Intelligence saving throw. On a failed save, the creature takes 4d10 psychic damage and you learn something about the creature (roll a d6 and consult the following table):

d6	Thing Learnt
1	The creature’s name
2	Something the creature fears
3	Something the creature desires
4	The creature’s condition immunities
5	The creature’s damage vulnerabilities, resistances, and immunities
6	The creature’s skill and saving throw proficiencies

On a successful save, the creature takes half as much damage and you don’t learn anything. A creature with an Intelligence score of 4 or lower automatically succeeds on the saving throw.

If a creature fails the initial saving throw then, on each of your turns for the duration, you can use your action to force the creature to make an Intelligence saving throw. On a failure, the creature takes 4d6 psychic damage and you learn something about the creature (roll a d6 and consult the table above). On a success, the creature takes half as much damage, you don’t learn anything, and the spell ends. The spell also ends if the target is ever outside the spell’s range.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the initial and ongoing damage increases by 1d10 and 1d6, respectively, for each slot level above 3rd.

Source: Heliana's Guide to Monster Hunting