Remand is therefore a winner for any deck that can leverage a temporary mana edge for bigger gains
Realmwalker is a great addition to any green-based tribal deck, whatever format you play, whether it be your Frog EDH deck helmed by Grolnok, the Omnivore or the most obvious place for it: Elves
Engines like Rhystic Study and Mystic Remora keep your hand full, while counters like Force of Will and Swan Song keep opponents in check
Late Game Finisher Gol.D.Roger is a game finisher play, preventing your opponent from activating their blockers if you or they are down to 0 Life cards
Even if you're only looking at Commander, this allows you to put a Sol Ring directly into play, but that's probably the tamest thing you can do with this thing
Supporter rule: You can play only one Supporter card each turn