War Caster: Add-on

As a War Caster, you have honed your skills of magical combat to an extensive degree, allowing you to learn even more techniques involving magic and war. You gain the following benefits:

• Choose one damaging cantrip of your choice from any class's spell list. The damaging cantrip you choose is immediately added into your arsenal of known cantrips, and it does not count against the number of cantrips you know.
• Whenever you cast a damaging spell using a 1st level spell slot, and the damaging spell you cast causes the death of one or more creatures, you immediately regain a 1st level spell slot for each creature you killed using a 1st level damaging spell.
• As a bonus action, you can modify the range of a damaging cantrip, damaging 1st level spell, or damaging 2nd level spell that you are about to cast using your same-turn action. The damaging cantrip's, damaging 1st level spell's, or damaging 2nd level spell's range is tripled until the end of said damaging cantrip's, damaging 1st level spell's, or damaging 2nd level spell's damaging effect. Once you use this feature, you cannot use it again until you finish a short or long rest.