Like most Magic: The Gathering cards, the value of Foil depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (The List)
Precons in the same release as MH3 left people questioning why, but the answer was overwhelmingly: because these decks are cool
When your deck just cant consistently set up or when your opponent can easily answer or ignore what you cheated in, theres not always much game to be played
The front side of the card sets up the backside of the card, just like catching a fish sets up your dinner for the night
Dismember Technically a colorless spell in spirit, since the colored pips are all Phyrexian mana, Dismember does a few things right