Twist magic

With a few words and quick simple gestures you can twist some element of another casters spell.  

You can target any type of spell within range that is cast using a 2nd level slot or lower. You can choose one of the following options to change for the targeted spell.

1. Healing can be changed into Radiant damage, or Radiant damage can be changed into healing.
2. The damage type that a spell deals can be changed into any other damage type. (Fire into Lightning)
3. The ability score used for the spell's saving throw can be changed to any other ability score. (Constitution save becomes a Wisdom save)
4. The target of the spell is shifted to a different eligible target within 10 feet of the original target.

At Higher Levels: When cast using a spell slot of 3rd level or higher you can target spells cast using a slot of the same level or lower. (For example, twisting a 3rd level spell takes a 3rd level slot.)