By filling your deck with Angels, Demons, and Dragons with these types of abilities, you can free up slots that you would use for instants and sorceries with the same effects , getting them for free with an attacker instead of casting them
With fairly modest stats, what makes the Dreamborn card worth a place in your deck is its What a Deal ability
It also has flying and only needs a single creature to crew it, so its super reliable
--- If you want to see what the deck might look like with those 10 cards added, Ive put it up on Archidekt, with 10 potential cuts that you can see here
If theres a R/G beatdown deck, Im sure Voltaic Brawler will be a major player
She has a ton of built-flexibility as a result