Synaptic Static

5th-Level Enchantment
Casting Time: 1 action
Range: 120 feet
Components: VS
Duration: Instantaneous

As in Xanathar's Guide to Everything except damage has been reduced to 6d6 psychic damage from 8d6 psychic damage and the following change has been made:
At Higher Levels. When you cast this spell using a spell slot of 6th level or higher, the damage increases by 1d6 for each slot level above 5th.

Source: XGE 167

Changelog