True Strike

You extend your hand and point a finger at a target in range. The target needs to make a WIS saving thrown and on a fail your magic grants you a brief insight into the target's defenses. On your next turn, the target losses it's DEX bonus for the first melee weapon attack attack roll against the target, provided that this spell hasn't ended.

Classes: Bard, Sorcerer, Warlock, Wizard

Subclasses: Arcana Cleric, Arcane Trickster Rogue, Eldritch Knight Fighter

Races: Elf (High), Tiefling (Abyssal)

Source: PHB, page 284.