Disruption

You telekineticly lash out at a target disrupting their focus. Before you or an ally is hit by an attack within range, you can use your reaction to launch a psychic spike of disruption to the hostile target. The target must make a intelligence saving throw or take 2d6 psychic damage and subtract 1d4 from their attack rolls. On a successful save the target takes half the damage and doesn't suffer the subtraction.

At higher levels: When this spell is cast using a spell slot of 2nd or higher the damage increases by 1d6 for each spell slot above 1st and the subtraction increases by 1d4 for each two slots above 1st.