Doubling your mana puts you leaps and bounds ahead of your opponents, especially considering that this excellent green planeswalker protects itself and pressures your opponent by animating lands
Well, Maleficent says you may draw a card when its played, meaning you can play her without having to draw
You can play every format available in paper, buy, sell, and trade cards with other players, and it's the best way to grind out games to practice or learn different strategies
How many sources of card advantage are good for your deck really differs on a case-by-case basis
The deck has a primary gameplan but much more going for it
Sacrificing another artifact exiles cards from the top of your library equal to its mana value plus one, and you can play them that turn