Emrakul, the World Anew 13 Toughness Emrakul, the World Anew can be cast for as little as 6 colorless mana with a discard outlet
Sacred Cat, Labyrinth Guardian, Trueheart Duelist - the playable vanilla flashbacks, comparable to Call of the Herd and Mother Bear
Target player discards two cards
Since then, it has been used all over pop culture, from Star Trek to Harley Quinn
This is the kind of spell that wins a game out of nowhere
If there were any lands that were also artifacts before the abilitys effect applied to them, those lands would become artifact land creatures, not just "creatures," or land creatures. The effect allows them to retain both the card type artifact" and the card type land. In addition, each land affected by the ability retains any land types and supertypes it had before the ability took effect