These two are a bit less powerful than their white, blue, and black counterparts, but they'll absolutely see play with Ashling and the backup commander, Mass of MysteriesMass of Mysteries, as well as the aforementioned Horde of Notions
Otherwise, its still a great way to use that extra two mana for about a 25% chance of success
Many auras provide powerful buffs like a toughness boost or an ability like first strike, making the enchanted creature very durable
Timetwister has been omitted from the list, mainly because its not quite as ubiquitous as the rest, and not every deck would want to play it if it could
(Until your next turn, those creatures attack each combat if able and attack a player other than you if able.) Overload (You may cast this spell for its overload cost