You can craft duplicates of cards you already own if you require them for deck-building, and can also craft cards you do not possess in an attempt to slowly complete your collection
Blue can draw the most, sure, but it also has many, many redundant effects and cheap options on the curve that can do other things
Your opponents will likely forget about the card as it sits in your graveyard, giving you room to spring a blowout when they swing in
Truefire Captain's last ability will trigger even if it is dealt lethal damage
Now there are a few dozen cards with the ability to phase out on command or cause something else to phase out
Then shuffle your library.) Razaketh, the Foulblooded: It ain't no Griselbrand (4BBBB Legendary Creature Demon Flying, lifelink Pay 7 life: Draw seven cards.) 7 cards will cost you 14 life and 7 other creatures with this dude