Phantasmal Killer

4th level Illusion
Casting Time
1 Action
120 Feet
Concentration, up to 1 minute

Spell Description

You tap into the nightmares of a creature you can see within range and create an illusory manifestation of its deepest fears, visible only to that creature. The target must make a Wisdom saving throw. On a failed save, the target becomes frightened for the duration. At the end of each of the target’s turns before the spell ends, the target must succeed on a Wisdom saving throw or take 4d10 psychic damage. On a successful save, the spell ends.

At Higher Levels. When you cast this spell using a spell slot of 5th level or higher, the damage increases by 1d10 for each slot level above 4th.

1st 2nd 3rd 4th 5th 6th 7th 8th 9th
Damage Dice 4d10 5d10 6d10 7d10 8d10 9d10
Min Damage 4 5 6 7 8 9
Average Damage 22 27.5 33 38.5 44 49.5
Max Damage 40 50 60 70 80 90
Lvl Dice Min Avg Max
4th 4d10 4 22 40
5th 5d10 5 27.5 50
6th 6d10 6 33 60
7th 7d10 7 38.5 70
8th 8d10 8 44 80
9th 9d10 9 49.5 90

Is Phantasmal Killer Good?

Overall Rating: Orange. This means that phantasmal killer is an OK spell.

Overall Notes: Turn-after-turn psychic damage and the Frightened condition may seem like a solid effect, but seeing as this is a single target spell and costs a 4th-level spell slot and concentration it's just not worth it most of the time.

Class Specific Ratings for Phantasmal Killer

Arcane Trickster rogue: There is potential for loads of damage here along with the Frightened condition, but by the time you can cast 4th level spells you'll need to have a high INT for this to be effective.