GUIDANCE - 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 1d4 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.

Source: Player's Handbook
Class List: Cleric, Druid.