Even if it doesn't manage to sneak into main decks, it's almost assuredly a sideboard staple for all of these decks, where it's significantly better than Loaming Shaman as creature-based graveyard hate
Not only does Spark Double circumvent the legend rule, but it can also copy a planeswalker
If an object on the battlefield becomes a copy of Catch of the Day, it'll copy the values chosen for Catch of the Day's enters-the-battlefield replacement effect
You control enchanted creature
Power-Level Tuning He reads the deck's bracket and helps you push it up toward cEDH or dial it down for a casual table - swapping fast mana, tutors, and combos in or out to match the pod you play in
Neheb, The EternalNeheb, The Eternal also cares about how much life our opponents have lost, except he makes mana equal to that amount in our second main phase, which we love