As a reaction, which you use when another creature you can touch or see makes an attack roll, an ability check, or a saving throw, you can use your wit to distract, confuse, and otherwise sap the confidence and competence of the creature. Roll a 1d4 and apply the result as a penalty to the creature’s roll. You can do so after the creature rolls but before any effects of the roll occur. The creature is immune if it can’t hear you or if it’s immune to being charmed.
You can expend 2 additional mana or psi to roll 2d4.
You can expend 4 additional mana or psi to roll 3d4.