Pyrotechnics

2nd-Level Transmutation
Casting Time: 1 action
Range: 60 feet
Components: VS
Duration: Instantaneous

As in Xanathar's Guide to Everything with the following added:

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, the area of fire extinguished and the area the spell affects increases by 5 feet for each slot level above 2nd.

Source: XGE 163

Changelog

Added upcasting option.