Blade of Disaster

9th-level Conjuration
Casting Time: 1 bonus action
Range: 60 feet
Components: VS
Duration: (C) 1 minute

As in Tasha's Cauldron of Everything with an upcasting option added:

At Higher Levels. When you cast this spell using a spell slot of 10th level or higher, the damage increases by 1d12 and the bonus damage on a critical hit increases by 2d12 for each slot level above 9th.

Source: TCE 106

Changelog

Added upcasting option.