Touch of Agony

Blood-Magic Level 1 Spell:
Casting Time: 1 Bonus Action
Range: Touch
Components: S
Duration: Concentration, up to 1 minute
You curse a creature within range you can touch with baleful otherworldly energies, greatly amplifying the pain it feels from all sources. Until the spell ends, each time it takes damage from any source, the creature must make a Constitution saving throw. On a failed save, it falls prone as its body twists in agony. While afflicted in this way, you and any other creature have advantage on any intimidation checks against the creature, so long as it involves threats or acts of physical violence.