Source: Player's Handbook
Divination cantrip
Casting Time:
1 action
Range:
Touch
Components:
V, S
Duration:
Concentration, up to 1 minute
You touch one willing creature. Once before the spell ends, the target can roll a d4 and add the number rolled to one ability check of its choice. It can roll the die before or after making the ability check. The spell then ends.