We're just happy that getting such a combo in operating order is pretty mana intensive
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
but when the Wizard decks I would build were not able to keep up with other decks around me, I felt disenfranchised
Its controller may search their library for a basic land card, put it onto the battlefield tapped, then shuffle
Of course, Snapcaster Mage doesn't need help to be good, which might mean that playing it with Naban, Dean of Iteration is win-more, but this is where the power of being a 2/1 rather than a do-nothing four-mana artifact like Panharmonicon becomes clear