You touch a willing creature to grant it the ability to see in the dark.

Squeezing your eyes shut, you pluck a floating spot from the air upon opening them. This spot evolves into a halo, unseen by others, enveloping your hand. Its touch grants you a vision surpassing the limits of light, a sight concealed within the clandestine radiance of the magical halo.

I Cast Darkvision
In the obscurity, I grope for a dried carrot, straining my eyes. Success. With the final incantation, I touch my temple, and a flash dispels the darkness, revealing the monochrome scene around me.