Nice. But, op? Either way, I'd use it.

damn, this is a brutal spell 

So they have to fail the save twice to take damage? That's pretty dumb lol

So, if they fail the first save, then they are frightened. But if they succeed on the second then all that will have happened was them being frightened for a round?

Actually this can be pretty good if you attack a creature with low WIS, since the damage happens every single turn and it can be really good damage that almost no one resists. Plus with them being frightened, it helps the rest of the team as well. Sure it wont do so hot against something with a high save, but you can really ruin an enemies day and shut them down hard if you use it right. Its just one of those spells that works really well against specific creatures and specific conditions. In those instances it can outshine most spells around that level as far as raw DPS on the target if you can hold it for the entire duration, considering it would only use one spell slot. 

Does the phrase 'On a successful save the spell ends' apply to both WIS saves, or just the one on the target's turn to avoid psychic damage? i.e. could a creature succeed against being frightened, but still take psychic damage on their turn? 

Nope just one. The last one it takes. The firsat one has nothing to do with the damgae and the spell only ends on a failed save on the last one

Why is this a wisdom save illusions usually are intelligence

My best guess is that you have to be wise enough to overcome your greatest fear?

Qu'est-ce que c'est
Fa-fa-fa-fa-fa-fa-fa-fa-fa-far better
Run, run, run, run, run, run, run away oh oh

pah!,poo weird this is the same thing... but 5 spell levels lower!!!

wait so that means this can literally be better then weird!!

Lol this is brutal

Quote from Janderjas >>

wait so that means this can literally be better then weird!!

 

 

Beyond 20

 

 

 

 

 

 Weird is Phantasmal Killer, but in an AOE

This spell is poorly worded and actually much more powerful than it seems, for a couple of reasons:

• The spell only ends if the target succeeds the save against the DAMAGE half of the spell. If the target succeeds the save against the frightened effect, the spell is still in effect. The target just isn't afraid of it.  <---EDIT: According to a sage advice by Jeremy Crawford this is innacurate. The spell is just poorly worded; the effect ends if the target succeeds either save. A shame really, as needing two saves limits the spell quite a bit.
  
  
• The Frightened condition specifies that the target cannot move closer to the source of its fear, and has disadvantage on attack rolls and ability checks when the source of its fear is in line of sight. In this case, the source of its fear is in its own mind. What that means is up to your DM, but I would imagine it would never be able to actually break line of sight in this case. Maybe even be unable to move.
• This spell can be thought of as an upgraded Phantasmal Force; the manifestation of its greatest fears is visible to the target creature. This could easily cause any creature that cannot determine this is an illusion (via using an action to make an Int check) to think this is real and possibly waste turns attacking the illusion.
• The save is Wisdom and the damage is Psychic; a difficult save for a lot of creatures and there is almost nothing in the game with resistance to Psychic damage.

It would definitely be nice to have more clarification on the source/location for the frightened effect. As written, it could be understood that since YOU tap into their nightmares... and YOU create the illusory manifestation... that YOU should be allowed to determine WHERE that manifestation exists. But since it doesn’t sufficiently clarify that, there is still room for interpretation. Is it in the target’s head so that it appears everywhere it looks and therefore can’t move in any direction? Is it in a specific location you choose that it can’t approach? Can that location be centered on an object, on yourself or one of your companions? It would be a shame to not get full use of the second part of the frightened effect of not moving toward the source of its fears. Otherwise, the spell should simply say that the target gets disadvantaged ability checks and attack rolls and leave it at that. 

What a shitty spell... 

Only usefull if the target has negative Wisdom mods, otherwise its just a level 4 fear spell unless the target somehow fgails the DC twice. 

Can a mob be immune to the frightened status effect but still take damage from the damage effect?

Can you cast this on a mob multiple times and have a stacking damage effect?

So I can be Scarecrow from Batman? Sweet.