Casting Time: 1 action
Range: 60 ft
Components: V
Duration: 1 round
Damage Type: Psychic
Save: Intelligence
You try to temporarily sliver the mind of one creature you can see within range. The target must succeed on an Intelligence saving throw or take 1d6 Psychic damage and subtract 1d4 from the next saving throw it makes before the end of your next turn.
The damage increases by 1d6 when you reach levels 5 (2d6), 11 (3d6), and 17 (4d6).
Verbal Component:
Mentis Lambero
Verbal Component (Alternative):
An invisible blade, a mental knife; Sever thy mind with psychic strife.
Classes: Bard, Sorcerer, Warlock, Wizard, Rogue
Tags: Damage, Debuff, Psionic
Source: Player's Handbook (2024) (page 298)
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Other Planes and Effects
Below is information about this spell as it relates to other planes and area of effects (i.e. underwater). Some of the information is pulled official D&D sources (such as books and the twitter feeds of D&D officials), but other information is derived from forums and online discussions. As always, it is up to the DM to decide how they wish to handle spell effects.
Underwater - Verbal Component
Official rules have been verified by Jeremy Crawford - "No rule prohibits verbal components from working underwater. Keep in mind that if you're talking, you're not holding your breath." Hence, while submerged underwater and holding its breath, a creature can cast a spell that requires a verbal component. After casting the spell, if the creature can't breathe underwater, it immediately runs out of breath. The creature can survive for a number of rounds equal to its Constitution modifier (minimum of 1 round).
