Saint, Thee Æther Dragon

Flying, Vigilance, Haste
Play with the top card of your library revealed.
You may play the top card of your library if it
is a land.
6 {e}: You may play an additional land this turn.
4 {e}: Target land becomes a 4/4 Elemental
creature with haste, and vigilance until end of turn.
Whenever a land enters the battlefield you gain an {e}.