It can even generate tokens on other players' turns if you can gain enough life
Memnite Memnite can be useful in aggressive decks looking to take advantage of having tons of artifacts
Norman Osbourn/The Green Goblin He's no Fleem, but The Green Goblin/Norman Osbourn is still a pretty fantastic card, and might have potential in a few different spots
If the card has any mandatory additional costs, you must pay those if you want to cast the card
With more lands coming into play, cards like Tireless Tracker, Avenger of Zendikar, Toph, Earthbending Master, and the like become more powerful
Redundancy might be necessary to allow Constructed-like play patterns, or to avoid overtaxing players on unfamiliar card comprehension