Lightning Rush (5e Spell)
From D&D Wiki
|Casting time:||1 reaction, which you take when a hostile creature within 30 feet of you successfully hits with an attack.|
Like a bolt of lightning, you rush in and impose yourself between an attack and its target. You teleport to within 5 feet of the triggering creature. The creature must then make a Dexterity saving throw. On a failed saving throw, the creature takes 5d10 lightning damage and the damage for the creature’s attack is reduced to 0. On a successful saving throw, the creature takes half as much damage and you take the damage from the attack instead.