Most undead are not weak to radiant in DnD 5e. I want to fix this!
The light you bring makes all who serve unlife shrink to the shadows. Gain the following benefits:
- Increase your Intelligence, wisdom, or charisma by 1 to a maximum of 20.
- When you do radiant damage to an undead, it must make a Charisma saving throw. On a failure, it gains damage vulnerability: radiant for one turn, including the attack you just did.