Elemental Arc

3rd-level abjuration

Casting Time: 1 reaction, which you take when a friendly creature within 10 feet of you would take acid, cold, fire, lightning, or thunder damage

Range: 10 feet

Components: S, M (a 6-inch rod of copper)

Duration: 1 round

You become a living conduit of elemental energy. The friendly target doesn’t take the triggering damage, as you draw the elemental energy into yourself and toward a hostile creature you can see within 30 feet of you. Make a ranged spell attack. On a hit, the target takes half the triggering damage, and you take the other half. On a miss, you take half the triggering damage. On a critical hit, the target takes all the triggering damage, and you take none.

After the attack, regardless if it hits or misses, you gain resistance to the triggering damage type until the start of your next turn.