Greater Restoration

Source: Player's Handbook
  5th-level abjuration
  Casting Time: 1 action Range: Touch Components: V, S, M (diamond dust worth at least 100 gp, which the spell consumes) Duration: Instantaneous
  You imbue a creature you touch with positive energy to undo a debilitating effect. You can reduce the target’s exhaustion level by one, or end one of the following effects on the target:
  One effect that charmed or petrified the target One curse, including the target’s attunement to a cursed magic item Any reduction to one of the target’s ability scores One effect reducing the target’s hit point maximum Spell Lists. Artificer, Bard, Cleric, Druid, Ranger