Maze's End What makes Maze's End a fun card is that it will grab you tons of Gates which you can use for mana, while also acting as a potential win-con while serving as your Thawing Glacier
At least this cares about any nonland card hitting the graveyard (though not tokens), which is great for artifact decks running Baubles and Eggs
Additionally, Cosmos Elixir may help counter some early game life loss, while possibly giving extra card draw
Edge of Eternitys mechanics all play to the board, and controlling the board is key to success
The duplicate perpetually becomes a Robot artifact in addition to its other types
Many older cards were updated in Oracle at that time to add that creature type, add the creature type to tokens they create, or have the creature type if they become creatures due to an ability