Mind Extension

2nd Level Evocation
Casting Time: 1 Bonus Action
Range: Self
Components: V, S, M (three or more cups connected by string)
Duration: 10 minutes
Classes: Artificer, Wizard

You expand your communicative abilities for a short time. For the duration of this spell, when you use a spell or feature to communicate with another creature (such as the sending spell), you may choose an additional creature to be targeted by the spell.

At Higher Levels. When you cast this spell using a spell slot of 3rd level or higher, you can affect one additional creature for each slot level above 2nd.

Mind Extension on DND Beyond