If your commander has multiple triggered abilities, or a static ability and an activated ability with multiple conditions, that can just be overwhelming, and you wind up missing out on opportunities to do good stuff because theres just so many options
Aetherize was first released in the set Gatecrash, illustrated by Ryan Barger
What Sets Are Legal in Modern
Just make sure one of those enchantments is Solemnity to keep everything coming back as often as you need
Covenant is also a fine sweeper-style effect in a multicolor control deck, with many EDHREC users slotting it into decks playing mana creatrues, counterspells, and other staples like Rhystic StudyRhystic Study, Esper SentinelEsper Sentinel, and Cyclonic RiftCyclonic Rift
Blue is the most universally powerful color when it comes to drawing cards, and it can help give decks longevity and consistency