Ray of Enfeeblement

From Player's Handbook, page 271.

Description
2nd-level necromancy


 * Casting Time: 1 action
 * Range: 60 feet
 * Components: V, S
 * Duration: Concentration, up to 1 minute

A black beam of enervating energy springs from your finger toward a creature within range. Make a ranged spell attack against the target. On a hit, the target deals only half damage with weapon attacks that use Strength until the spell ends.

At the end of each of the target's turns, it can make a Constitution saving throw against the spell. On a success, the spell ends.

Learned By

 * Classes: Warlock, Wizard
 * Subclasses: Cleric (Ambition Domain), Cleric (Death Domain), Cleric (Grave Domain), Fighter (Eldritch Knight), Rogue (Arcane Trickster), Mage of Witherbloom (Druid, Warlock)
 * Backgrounds: Golgari Agent, Orzhov Representative