I made a feat on D&D Beyond! A coworker informed me about the RealmsFeat contest held by D&D Beyond back in November. The contest was celebrating the release of "Heroes of the Realm" and the goal was to create a feat that captured the essence of the Realms and legendary accomplishments. I took a day or two to put together before submitting. I was pretty happy with it, particularly the idea of mixing together damage types. Not only is it versatile for the player but it also allows them to customize their explosion a bit if they want to stick to a theme.
It was a fun contest and I hope players enjoy using it. I recently updated the feat for clarity and added a category for the explosion range.
Feel free to check it out here if you want to add it to your homebrew collection: