D&D (2024) D&D 2024, Phantasmal Force and Metamagic Interactions

Lord Ustur

Explorer
Really guys, the new Phantasmal Force got really insane and besides that it can simply end the enemy without even having a chance of reaction.

Combos like Subtle Phantasmal Force can end an enemy without any chance of reaction. "A giant snake made of shadows and pursues tirelessly."

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It also has excellent interactions with metamagic... Subtle, Heightein and Extended for Insane 180 damage.
What do you think about that?







New Phantasmal Force
You attempt to craft an illusion in the mind of a creature you can see within range. The target makes an Intelligence saving throw. On a failed save, you create a phantasmal object, creature, or other phenomenon that is no larger than a 10-foot Cube and that is perceivable only to the target for the duration. The phantasm includes sound, temperature, and other stimuli.
The target can take a Study action to examine the phantasm with an Intelligence (Investigation) check against your spell save DC. If the check succeeds, the target realizes that the phantasm is an illusion, and the spell ends.
While affected by the spell, the target treats the phantasm as if it were real and rationalizes any illogical outcomes from interacting with it. For example, if the target steps through a phantasmal bridge and survives the fall, it believes the bridge exists and something else caused it to fall.
An affected target can even take damage from the illusion if the phantasm represents a dangerous creature or hazard. On each of your turns, such a phantasm can deal 2d8 Psychic damage to the target if it is in the phantasm's area or within 5 feet of the phantasm. The target perceives the damage as a type appropriate to the illusion.
 

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New Phantasmal Force
... The target can take a Study action to examine the phantasm with an Intelligence (Investigation) check against your spell save DC.
As a DM, this is the part of the Fantasmal Force spell that I find tricky. It feels more like DM fiat, rather than a spell description.

Exactly when should a monster decide to "examine" the phenomenon, or not?

A flat Intelligence save might be better for routine usage, with the assumption that the phantasm might "feel" slightly off. But this too affects flavor.

So far, I have been using a two-step process. An automatic Wisdom save to feel something off, then an Intelligence save to figure out what exactly that is.
 

As a DM, this is the part of the Fantasmal Force spell that I find tricky. It feels more like DM fiat, rather than a spell description.

Exactly when should a monster decide to "examine" the phenomenon, or not?

A flat Intelligence save might be better for routine usage, with the assumption that the phantasm might "feel" slightly off. But this too affects flavor.

So far, I have been using a two-step process. An automatic Wisdom save to feel something off, then an Intelligence save to figure out what exactly that is.
When they see their friend fighting nothing (if theres more than one monster)

I also compare passive investigation to the spell dc.
 

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