It has great single-target removal spells like Path to Exile as well as a few sweepers like Time Wipe, and conditional cards like Dusk that help preserve a player's battlefield while wiping out an opponent's or two
Humans are one of the deepest kindred types, and though six is a lot to earn the extra card, owyn, Shieldmaiden helps you get there quick since the ability triggers on any humans, including tokens
Salvation Engine Salvation Engine is one of the hardest vehicles to crew at 6, but at least it has a hefty bonus
The Commander Legends decks are excellent starting points for someone looking to join the format, or to start building a classic archetype, and their upgrade paths are outlined fairly clearly
The same has happened with Speed Duel, as the GX box introduced plenty of new GX-era Monsters on top of adding in new skills to the game
It can easily be the most powerful card in your deck