1. I’ve done some thinking, and I suppose Angel of Serenity could be a good choice out of the sideboard in Oath Decks. The fact that it can hit cards in graveyards gives it some benefit in fighting off Dredge decks… It could also bring about a version of Oath that’s similar to Elephant Oath, which utilizes Terastodon, should there be a lightning fast creature deck (Affinity??) running rampant. Angel of Serenity doesn’t hit non-creature permanents, but that doesn’t necessarily mean her ability is not useful in an environment that would be in need of creature control on this scale.