Elemental Foible
4th-level necromancy (Druid,Ranger,Sorcerer,Warlock,Wizard)
- Casting Time: 1 bonus action
- Range: 5 feet
- Components: V, M (a weapon)
- Duration: 1 minute
When you cast this spell, you must choose one target you have already hit with a melee attack this turn, otherwise the spell fails. You weave a deadly, glowing symbol into your target's flesh that makes it vulnerable to an element of your choice. Select one of the following damage types: acid, cold, fire, lightning, or thunder. Until the spell ends, at the end of any turn in which the target took damage of the type you chose, the target takes necrotic damage equal to 2d6 + your spellcasting ability modifier.