While Ragavan is less impressive in Commander than it is in 1v1 Magic, it still sees a ton of play there
Other takes on this strategy have centered on Brain in a Jar, which has the disadvantage that it can be slow to get going late, but its advantage, in addition to not being an enchantment, is that it has an interesting combination with Days Undoing that allows you to cast Days Undoing on your opponents turn, skipping the end the turn clause, which means that the Days Undoing ends up in your graveyard
I'm thinking of things like Triplicate Titan which will have a really nice payoff and can be eaten in turn to generate mana to keep fueling your unearthing
Cast equipment, cast Nahiri, attack to cast way more equipment, and hope to dodge artifact board wipes long enough to close out the game
Wrap Up Alhammarret's Archive | Illustration by Richard Wright This has been a short list, but hopefully with large insights for you
Designed to have the functions of both colors at the same time: Cards like Recoil have the blue function of Reverse Summon and the black function of Discard at the same time