While not nearly as exciting as hitting the opponent for 10 damage or stealing your opponent's two best creatures, drawing extra cards is the foundation of a good Panharmonicon deck, and Sea Gate Oracle offers the best on-curve way of drawing extra cards with Naban, Dean of Iteration
I might like the January release of a new set best of all, because its like getting to have a second Christmas
An Aura put onto the battlefield this way can enchant an artifact, land, or creature that was already put onto the battlefield, but can't enchant an enchantment that's being put onto the battlefield at the same time as it
If you're playing anything with red/green we have a writeup on red draw cards for you too
Vampires often care about lifegain , with lifelink and similar abilities intermingling flavorfully with the idea of drinking a victims blood, literally gaining strength from dealing damage