Hex

Hex was a spell used by warlocks to curse on a creature.

Effects
A caster was able to use this spell to curse a creature within 90 feet (27 meters). The target creature had to be within sight of the caster. When cursed, the creature suffered debilitating necrotic damage until the spell expired. Remove curse could be used to remove the curse. The length of time a creature remained cursed was determined by the caster's skill level.

Components
In addition to verbal and somatic components, the spell required a material component, an eye of a newt, which had to be petrified.