Source: Player's Handbook
Divination cantrip
Casting Time:
1 action
Range:
30 feet
Components:
S
Duration:
Concentration, up to 1 round
You extend your hand and point a finger at a target in range. Your magic grants you a brief insight into the target’s defenses. On your next turn, you gain advantage on your first attack roll against the target, provided that this spell hasn’t ended.